WELCH & FORBES INC
13F-HR/A, 2000-01-31
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<PAGE>

                                   FORM 13F

               INFORMATION REQUIRED OF INSTITUTIONAL INVESTMENT
             MANAGERS PURSUANT TO SECTION 13(f) OF THE SECURITIES
                   EXCHANGE ACT OF 1934 AND RULES THEREUNDER

                      Securities and Exchange Commission
                            Washington, D.C. 20549

                Report for the Calendar Quarter Ended 12/31/99
                                                      --------

                       If amended report check here: [_]

Name of Institutional Manager:

  Welch & Forbes, Inc.
- --------------------------------------------------------------------------------

Business Address:

Street  45 School Street      City  Boston        State  MA        Zip  02108
        -------------------         ---------            -----          --------

Name, Phone No. and Title of Person Duly Authorized to Submit Report:

  V. William Efthim, (617) 523-1635, Vice President
- --------------------------------------------------------------------------------

     The institutional investment manager submitting this Form and its
attachments and the person by whom it is signed represent hereby that all the
information contained therein is true, correct and complete. It is understood
that all the required items, statements and schedules are considered integral
parts of this Form and that the submission of any amendment represents that all
unamended items, statements and schedules remain true, correct and complete as
previously submitted.

     Pursuant to the requirements of Securities Exchange Act of 1934, the
undersigned institutional investment manager has caused this report to be signed
on his behalf in the City of Boston and State of Massachusetts on the 5th day of
January, 2000.

                                                         WELCH & FORBES, INC.
                                                      ------------------------


                                                      ________________________

Name and 13F file numbers of all Institutional Investment Managers with respect
to which this schedule is filed (other than the one filing this report).
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      1
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                          As of 12/31/1999


HOLDING COMPANY:  (2) WELCH AND FORBES

                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
COMMON
- ------

A T & T CORP                   001957109            660,301.27         13124  X                        0              0      13
                                                  3,516,592.27         69895       X                   0              0      69
                                                  3,516,592.27         69895       X                   0              0      69
                                             ----------------- --------------               -------------     ---------- ------
                                                  4,176,893.54         83019                           0              0      83

A T & T CORP-LIBERTY MEDIA     001957208            365,218.75          6500  X                        0              0       6
GROUP A
                                                  6,317,610.14        112438       X                   0              0     112
                                             ----------------- --------------               -------------     ---------- ------
                                                  6,682,828.89        118938                           0              0     118

ABBOTT LABS                    002824100         15,332,183.19        417913  X                        0              0     417
                                                 34,839,624.06        949632       X                   0              0     949
                                             ----------------- --------------               -------------     ---------- ------
                                                 50,171,807.25       1367545                           0              0    1367

ABTECH INDUSTRIES INC          00352099A             30,003.75          5715  X                        0              0       5
                                                     79,994.25         15237       X                   0              0      15
                                             ----------------- --------------               -------------     ---------- ------
                                                    109,998.00         20952                           0              0      20


ADAPTEC INC                    00651F108            298,121.99          6000       X                   0              0       6

AETNA INC                      008117103            491,453.44          8865       X                   0              0       8

AFLAC INC                      001055102            680,119.00         14548  X                        0              0      14
                                                    969,595.00         20740       X                   0              0      20
                                             ----------------- --------------               -------------     ---------- ------
                                                  1,649,714.00         35288                           0              0      35

AIR PRODS & CHEMS INC          009158106          1,068,877.50         32268  X                        0              0      32
                                                  6,188,180.63        186813       X                   0              0     186
                                             ----------------- --------------               -------------     ---------- ------
                                                  7,257,058.13        219081                           0              0     219

ALBERTSONS INC                 013104104             12,875.00           400  X                        0              0
                                                    190,163.75          5908       X                   0              0       5


                                             ----------------- --------------               -------------     ---------- ------
                                             ----------------- --------------               -------------     ---------- ------
         SUBTOTALS FOR THIS PAGE                 71,040,913.99       1865996                           0              0    1865
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      2
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                          As of 12/31/1999


HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
COMMON (cont.)
- --------------
- --------------

                                             ----------------- --------------               -------------     ---------- ------
                                                    203,038.75          6308                           0              0       6

ALCOA INC.                     013817101            249,743.75          3100  X                        0              0       3
                                                    563,937.50          7000       X                   0              0       7
                                             ----------------- --------------               -------------     ---------- ------
                                                    813,681.25         10100                           0              0      10

ALLEGIANCE TELECOM INC         01747T102            191,552.10          2150  X                        0              0       2
                                                  1,487,869.80         16700       X                   0              0      16
                                             ----------------- --------------               -------------     ---------- ------
                                                  1,679,421.90         18850                           0              0      18

ALLIANT ENERGY CORP            018802108              5,512.50           200  X                        0              0
                                                  3,074,266.13        111538       X                   0              0     111
                                             ----------------- --------------               -------------     ---------- ------
                                                  3,079,778.63        111738                           0              0     111


ALLSTATE CORP                  020002101             48,000.00          2000  X                        0              0       2
                                                    959,304.00         39971       X                   0              0      39
                                             ----------------- --------------               -------------     ---------- ------
                                                  1,007,304.00         41971                           0              0      41

ALLTEL CORP                    020039103          1,447,246.38         17569  X                        0              0      17
                                                 12,452,958.25        151174       X                   0              0     151
                                             ----------------- --------------               -------------     ---------- ------
                                                 13,900,204.63        168743                           0              0     168

ALZA CORP DEL                  022615108             34,750.00          1000  X                        0              0       1
                                                  2,147,550.00         61800       X                   0              0      61
                                             ----------------- --------------               -------------     ---------- ------
                                                  2,182,300.00         62800                           0              0      62

AMERICA ONLINE INC             02364J104            507,257.50          6620  X                        0              0       6
                                                  1,210,675.00         15800       X                   0              0      15
                                             ----------------- --------------               -------------     ---------- ------
                                                  1,717,932.50         22420                           0              0      22
                                                  1,717,932.50         22420                           0              0      22

AMERICAN BIOGENETIC            024611105             10,620.00         20000       X                   0              0      20
                                             ----------------- --------------               -------------     ---------- ------
         SUBTOTALS FOR THIS PAGE                 24,391,242.91        456622                           0              0     456
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      3
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 AMERICAN ELEC PWR INC          025537101            213,186.69          6547       X                   0              0       6

 AMERICAN EXPRESS CO            025816109          1,555,563.75          9385  X                        0              0       9
                                                   8,302,749.00         50092       X                   0              0      50
                                              ----------------- --------------               -------------     ---------- ------
                                                   9,858,312.75         59477                           0              0      59

 AMERICAN GENERAL CORP          026351106            496,345.50          6753  X                        0              0       6
                                                  17,831,835.00        242610       X                   0              0     242
                                              ----------------- --------------               -------------     ---------- ------
                                                  18,328,180.50        249363                           0              0     249

 AMERICAN HOME PRODS CORP       026609107          2,852,577.76         71538  X                        0              0      71
                                                  26,787,147.76        671778       X                   0              0     671
                                                  26,787,147.76        671778       X                   0              0     671
                                              ----------------- --------------               -------------     ---------- ------
                                                  29,639,725.52        743316                           0              0     743

 AMERICAN INTL GROUP            026874107          9,669,815.19         89277  X                     1800              0      87
                                                  98,125,493.35        905948       X                   0              0     905
                                              ----------------- --------------               -------------     ---------- ------
                                                 107,795,308.54        995225                        1800              0     993

 AMERICAN WTR WKS INC           030411102            341,000.00         16000       X                   0              0      16

 AMGEN INC                      031162100          2,317,075.51         35716  X                      800              0      34
                                                  13,629,848.25        210094       X                   0              0     210
                                              ----------------- --------------               -------------     ---------- ------
                                                  15,946,923.76        245810                         800              0     245

 ANADARKO PETE CORP             032511107            414,919.88         12226       X                   0              0      12

 ANALOG DEVICES INC             032654105            477,510.01          5280  X                        0              0       5
                                                   3,518,923.13         38910       X                   0              0      38
                                                   3,518,923.13         38910       X                   0              0      38
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,996,433.14         44190                           0              0      44

 ANHEUSER BUSCH COS INC         035229103            267,671.25          3780  X                        0              0       3
                                                  10,055,375.00        142000       X                   0              0     142
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                196,857,037.03       2517934                        2600              0    2515
</TABLE>


<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      4
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                  10,323,046.25        145780                           0              0     145

 ANIKA THERAPEUTICS INC         035255108            284,872.51         41436       X                   0              0      41

 AON CORP                       037389103            601,035.88         15073  X                        0              0      15
                                                      96,896.26          2430       X                   0              0       2
                                              ----------------- --------------               -------------     ---------- ------
                                                     697,932.14         17503                           0              0      17

 APPLIED MATLS INC              038222105          1,004,328.13          8075  X                        0              0       8
                                                   3,731,250.00         30000       X                   0              0      30
                                                   3,731,250.00         30000       X                   0              0      30
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,735,578.13         38075                           0              0      38

 ARGUSS HLDGS INC               040282105            594,374.38         46165       X                   0              0      46

 ATLANTIC RICHFIELD CO          048825103            207,442.26          2428  X                        0              0       2
                                                   6,355,268.47         74385       X                   0              0      74
                                              ----------------- --------------               -------------     ---------- ------
                                                   6,562,710.73         76813                           0              0      76

 AU BON PAIN INC B              050990100             21,216.44          4297  X                        0              0       4
                                                     699,115.46        141593       X                   0              0     141
                                              ----------------- --------------               -------------     ---------- ------
                                                     720,331.90        145890                           0              0     145

 AUTOMATIC DATA PROCESSING      053015103          2,883,945.33         52735  X                      500              0      52
                                                   7,466,156.29        136524       X                   0              0     136
                                              ----------------- --------------               -------------     ---------- ------
                                                  10,350,101.62        189259                         500              0     188
                                                  10,350,101.62        189259                         500              0     188

 AVALONBAY COMMUNITIES INC      053484101            229,594.81          6667  X                        0              0       6

 AVANDEL HEALTHCARE INC         9899479J7            750,000.00        750000       X                   0              0     750

 AVERY DENNISON CORP            053611109            782,756.25         10900       X                   0              0      10

 AVERY DEWING CORP              0536229A6            654,385.68          1083       X                   0              0       1
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 26,362,638.15       1323791                         500              0    1323
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      5
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------


 AVIRON                         053762100             89,415.90          5700  X                        0              0       5
                                                     364,346.26         23226       X                   0              0      23
                                              ----------------- --------------               -------------     ---------- ------
                                                     453,762.16         28926                           0              0      28

 BANK NEW YORK INC              064057102            437,400.00         10800  X                        0              0      10
                                                   2,045,250.00         50500       X                   0              0      50
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,482,650.00         61300                           0              0      61

 BANK OF AMERICA CORP           060505104            756,612.34         14927  X                        0              0      14
                                                   4,937,621.43         97413       X                   0              0      97
                                              ----------------- --------------               -------------     ---------- ------
                                                   5,694,233.77        112340                           0              0     112

 BANK ONE CORP                  06423A103            918,224.33         28417  X                        0              0      28
                                                   9,276,175.59        287077       X                   0              0     287
                                              ----------------- --------------               -------------     ---------- ------
                                                  10,194,399.92        315494                           0              0     315

 BANYAN SYS INC                 066908104            546,488.88         27240  X                        0              0      27
                                                   8,866,802.14        441970       X                   0              0     441
                                              ----------------- --------------               -------------     ---------- ------
                                                   9,413,291.02        469210                           0              0     469

 BAXTER INTL INC                071813109          1,062,888.50         16888       X                   0              0      16


 BEACON CAP PARTNERS INC        073561102          1,290,000.00         64500       X                   0              0      64

 BECTON DICKINSON & CO          075887109              5,387.50           200  X                        0              0
                                                     231,662.50          8600       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                     237,050.00          8800                           0              0       8

 BELL ATLANTIC CORP             077853109          1,015,611.00         16514  X                        0              0      16
                                                   2,187,063.00         35562       X                   0              0      35

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 34,030,949.37       1129534                           0              0    1129
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      6
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001


                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                   3,202,674.00         52076                           0              0      52

 BELLSOUTH CORP                 079860102            830,734.67         17746  X                        0              0      17
                                                  35,027,734.02        748256       X                   0              0     748
                                              ----------------- --------------               -------------     ---------- ------
                                                  35,858,468.69        766002                           0              0     766

 BELO A H CORP DEL              080555105          1,225,570.50         66024       X                   0              0      66

 BERKSHIRE HATHAWAY INC B       084670207            776,340.00           454  X                        0              0
                                                  19,945,440.00         11664       X                   0              0      11
                                              ----------------- --------------               -------------     ---------- ------
                                                  20,721,780.00         12118                           0              0      12

 BERKSHIRE HATHAWAY INC CL A    084670108            420,800.00             8  X                        0              0
 CONV

 BESTFOODS                      08658U101            793,156.25         14930  X                        0              0      14
                                                     926,075.00         17432       X                   0              0      17
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,719,231.25         32362                           0              0      32

 BIOGEN INC                     090597105          1,406,850.00         16600       X                   0              0      16


 BLACK & DECKER CORP            091797100          1,038,890.75         20726       X                   0              0      20

 BLACK BOX CORP DEL             091826107            211,798.40          3200  X                        0              0       3
                                                     529,496.00          8000       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                     741,294.40         11200                           0              0      11

 BLUE DIAMOND OIL CORP          095599908            134,400.00         22400       X                   0              0      22

 BOEING CO                      097023105            215,943.75          5235  X                        0              0       5
                                                      37,125.00           900       X                   0              0
                                              ----------------- --------------               -------------     ---------- ------
                                                     253,068.75          6135                           0              0       6

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 63,520,354.34        953575                           0              0     953
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      7
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 BOSTON PRIVATE FINANCIAL       101119105            277,984.00         32000       X                   0              0      32
 HOLDINGS INC


 BOSTON PROPERTYS INC           101121101             77,812.50          2500  X                        0              0       2
                                                     186,750.00          6000       X                   0              0       6
                                              ----------------- --------------               -------------     ---------- ------
                                                     264,562.50          8500                           0              0       8

 BOSTON SCIENTIFIC CORP         101137107            100,687.50          4500  X                        0              0       4
                                                     285,370.75         12754       X                   0              0      12
                                              ----------------- --------------               -------------     ---------- ------
                                                     386,058.25         17254                           0              0      17

 BRADLEY REAL ESTATE INC        104580105            207,000.00         12000       X                   0              0      12

 BRISTOL MYERS SQUIBB CO        110122108          4,893,423.75         74995  X                     1400              0      73
                                                  34,652,839.50        531078       X                   0              0     531
                                              ----------------- --------------               -------------     ---------- ------
                                                  39,546,263.25        606073                        1400              0     604

 BROKEN HILL PROPRIETARY LTD    112169602            299,617.50         11414       X                   0              0      11
 ADR
 ADR

 BURLINGTN NORTHN SANTA FE      12189T104            636,518.25         26316       X                   0              0      26

 BURLINGTON RESOURCES INC       122014103            407,475.50         12442       X                   0              0      12

 BURNHAM PACIFIC PROPERTIES INC 12232C108            180,000.00         20000       X                   0              0      20
 MD

 CABLESOFT CORP                 1269109D2                  0.00        144340       X                   0              0     144

 CABOT CORP                     127055101            984,506.26         48468       X                   0              0      48

 CABOT INDUSTRIAL TRUST         127072106            180,659.50         10178  X                        0              0      10
                                                   8,027,473.00        452252       X                   0              0     452
                                              ----------------- --------------               -------------     ---------- ------
                                                   8,208,132.50        462430                           0              0     462

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 51,398,118.01       1401237                        1400              0    1399
          SUBTOTALS FOR THIS PAGE                 51,398,118.01       1401237                        1400              0    1399
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      8
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------


 CAIRNSTONE INC                 1277669C9                  0.00        200000       X                   0              0     200

 CAMPBELL SOUP CO               134429109            186,300.00          4800  X                        0              0       4
                                                   7,255,220.63        186930       X                   0              0     186
                                              ----------------- --------------               -------------     ---------- ------
                                                   7,441,520.63        191730                           0              0     191

 CAPITAL ONE FINL CORP          14040H105          1,158,806.25         24300       X                   0              0      24

 CARDINAL HEALTH INC            14149Y108            809,895.64         16829  X                        0              0      16
                                                   1,337,441.88         27791       X                   0              0      27
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,147,337.52         44620                           0              0      44

 CAROLINA PWR & LT CO           144141108            135,025.00          4400  X                        0              0       4
                                                   2,824,723.03         92048       X                   0              0      92
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,959,748.03         96448                           0              0      96


 CATERPILLAR INC                149123101            132,848.00          2888  X                        0              0       2
                                                     316,480.00          6880       X                   0              0       6
                                              ----------------- --------------               -------------     ---------- ------
                                                     449,328.00          9768                           0              0       9

 CBS CORP                       12490K107          1,798,402.50         28890  X                        0              0      28
                                                   8,632,207.50        138670       X                   0              0     138
                                              ----------------- --------------               -------------     ---------- ------
                                                  10,430,610.00        167560                           0              0     167

 CENTAUR INC                    151327996            111,639.00         74426       X                   0              0      74

 CHAMPION ENTERPRISES INC       158496109            310,260.25         37046  X                        0              0      37
                                                   1,508,371.00        180104       X                   0              0     180
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,818,631.25        217150                           0              0     217

 CHASE GEN CORP                 161555107                  0.00         19129       X                   0              0      19


 CHASE MANHATTAN CORP NEW       16161A108            234,187.50          3000  X                        0              0       3
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 26,751,808.18       1048131                           0              0    1048

</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE      9
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                     249,019.38          3190       X                   0              0       3
                                              ----------------- --------------               -------------     ---------- ------
                                                     483,206.88          6190                           0              0       6

 CHEVRON CORP                   166751107            651,510.00          7620  X                        0              0       7
                                                   5,872,824.00         68688       X                   0              0      68
                                              ----------------- --------------               -------------     ---------- ------
                                                   6,524,334.00         76308                           0              0      76

 CHOICEPOINT INC                170388102            171,150.00          4200  X                        0              0       4
                                                      71,720.00          1760       X                   0              0       1
                                              ----------------- --------------               -------------     ---------- ------
                                                     242,870.00          5960                           0              0       5

 CHUBB CORP                     171232101          1,660,761.00         29394       X                   0              0      29


 CIGNA CORP                     125509109            418,472.81          5235  X                        0              0       5
                                                   2,512,835.34         31435       X                   0              0      31
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,931,308.15         36670                           0              0      36

 CINTAS CORP                    172908105          3,774,498.00         69576  X                     1000              0      68
                                                  45,046,758.75        830355       X                   0              0     830
                                              ----------------- --------------               -------------     ---------- ------
                                                  48,821,256.75        899931                        1000              0     898

 CIRCUIT CITY GROUP             172737108            270,000.00          6000  X                        0              0       6

 CISCO SYSTEMS INC              17275R102          9,618,099.91         90577  X                     1100              0      89
                                                  38,389,361.37        361526       X                   0              0     361
                                              ----------------- --------------               -------------     ---------- ------
                                                  48,007,461.28        452103                        1100              0     451

 CITIGROUP INC.                 172967101          1,356,373.13         24522  X                     1450              0      23
                                                   2,649,413.46         47899       X                   0              0      47
                                                   2,649,413.46         47899       X                   0              0      47
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,005,786.59         72421                        1450              0      70


                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                112,712,797.15       1581977                        3550              0    1578
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     10
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 CLARITY IMAGING TECHNOLOGIES   170000954                  0.00        120000       X                   0              0     120
 INC

 CLOSURE MED CORP               189093107             28,067.50          2060  X                        0              0       2
                                                     403,300.00         29600       X                   0              0      29
                                              ----------------- --------------               -------------     ---------- ------
                                                     431,367.50         31660                           0              0      31

 CMGI INC                       125750109          1,710,181.94          6362  X                      500              0       5
                                                  12,001,918.17         44648       X                   0              0      44
                                              ----------------- --------------               -------------     ---------- ------
                                                  13,712,100.11         51010                         500              0      50


 COCA COLA CO                   191216100            211,835.94          3625  X                        0              0       3
                                                  15,120,878.49        258753       X                   0              0     258
                                              ----------------- --------------               -------------     ---------- ------
                                                  15,332,714.43        262378                           0              0     262

 COGNEX CORP                    192422103            902,627.77         23734  X                        0              0      23
                                                  19,164,049.09        503906       X                   0              0     503
                                              ----------------- --------------               -------------     ---------- ------
                                                  20,066,676.86        527640                           0              0     527

 COLGATE PALMOLIVE CO           194162103          1,474,000.00         23584  X                        0              0      23
                                                  10,216,000.00        163456       X                   0              0     163
                                              ----------------- --------------               -------------     ---------- ------
                                                  11,690,000.00        187040                           0              0     187

 COMCAST CORP SPL A             200300200            376,837.56          7380  X                        0              0       7
                                                     102,124.00          2000       X                   0              0       2
                                              ----------------- --------------               -------------     ---------- ------
                                                     478,961.56          9380                           0              0       9
                                                     478,961.56          9380                           0              0       9

 COMPAQ COMPUTER CORP           204493100            202,269.25          7372  X                        0              0       7
                                                     430,768.75         15700       X                   0              0      15
                                              ----------------- --------------               -------------     ---------- ------
                                                     633,038.00         23072                           0              0      23

 COMPUTER ASSOC INTL INC        204912109            935,987.50         13300  X                        0              0      13
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 63,280,845.96       1225480                         500              0    1224
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     11
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)
  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                     119,848.63          1703       X                   0              0       1
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,055,836.13         15003                           0              0      15

 COMPUTER SCIENCES CORP         205363104          1,922,575.01         21200  X                        0              0      21
                                                   1,234,256.88         13610       X                   0              0      13
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,156,831.89         34810                           0              0      34

 COMVERSE TECHNOLOGY INC        205862402            235,875.00          1700       X                   0              0       1
 COMVERSE TECHNOLOGY INC        205862402            235,875.00          1700       X                   0              0       1

 CONCORD EFS INC                206197105            235,950.00          9075  X                        0              0       9
                                                     763,100.00         29350       X                   0              0      29
                                              ----------------- --------------               -------------     ---------- ------
                                                     999,050.00         38425                           0              0      38

 CONOCO INC B                   208251405            310,470.19         12544  X                        0              0      12
                                                   3,233,166.75        130633       X                   0              0     130
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,543,636.94        143177                           0              0     143

 CONSOLIDATED NAT GAS CO        209615103            207,600.00          3200  X                        0              0       3
                                                      83,559.00          1288       X                   0              0       1
                                              ----------------- --------------               -------------     ---------- ------
                                                     291,159.00          4488                           0              0       4

 CONSOLIDATED STORES CORP       210149100            260,632.13         16614       X                   0              0      16

 CORNING INC                    219350105             60,968.75           500  X                        0              0
 CORNING INC                    219350105             60,968.75           500  X                        0              0
                                                   7,576,220.78         62132       X                   0              0      62
                                              ----------------- --------------               -------------     ---------- ------
                                                   7,637,189.53         62632                           0              0      62

 CORP FOR LASER OPTICS RES      2200359A9             12,501.00          6945  X                        0              0       6
                                                     137,500.20         76389       X                   0              0      76
                                              ----------------- --------------               -------------     ---------- ------
                                                     150,001.20         83334                           0              0      83

 COX COMMUNICATIONS INC A       224044107            535,747.13         10622  X                     1000              0       9
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 16,929,971.45        397505                        1000              0     396
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     12
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999
                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                   1,576,121.44         31249       X                   0              0      31
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,111,868.57         41871                        1000              0      40

 CRITICAL PATH                  22674V100            255,899.60          2875       X                   0              0       2

 CVS CORP                       126650100             26,950.00           700  X                        0              0
 CVS CORP                       126650100             26,950.00           700  X                        0              0
                                                     367,675.00          9550       X                   0              0       9
                                              ----------------- --------------               -------------     ---------- ------
                                                     394,625.00         10250                           0              0      10

 DAYTON HUDSON CORP             239753106            206,675.00          2800  X                        0              0       2
                                                     298,940.63          4050       X                   0              0       4
                                              ----------------- --------------               -------------     ---------- ------
                                                     505,615.63          6850                           0              0       6

 DELL COMPUTER CORP             247025109            239,485.20          4600       X                   0              0       4

 DEVRY INC DEL                  251893103            204,750.00         10500       X                   0              0      10

 DIAMOND TECHNOLOGY PARTNERS    252762109            527,680.00          6208  X                        0              0       6
                                                   6,704,205.00         78873       X                   0              0      78
                                              ----------------- --------------               -------------     ---------- ------
                                                   7,231,885.00         85081                           0              0      85

 DIGITRACE CARE SYS             2538979A2             60,000.00         20000       X                   0              0      20
 DIGITRACE CARE SYS             2538979A2             60,000.00         20000       X                   0              0      20

 DII GROUP INC                  232949107          5,633,461.50         81057       X                   0              0      81

 DISNEY WALT CO                 254687106            490,202.89         16831  X                        0              0      16
                                                   2,456,868.51         84356       X                   0              0      84
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,947,071.40        101187                           0              0     101

 DOLLAR GENERAL CORP            256669102            317,625.01         14000  X                        0              0      14

 DOVER CORP                     260003108          1,024,496.25         22830  X                        0              0      22
                                                  34,643,141.02        771992       X                   0              0     771

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 55,034,177.05       1162471                           0              0    1162
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     13
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     13
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                  35,667,637.27        794822                           0              0     794

 DOW CHEM CO                    260543103          1,298,981.25          9897  X                        0              0       9
 DOW CHEM CO                    260543103          1,298,981.25          9897  X                        0              0       9
                                                   5,220,075.00         39772       X                   0              0      39
                                              ----------------- --------------               -------------     ---------- ------
                                                   6,519,056.25         49669                           0              0      49

 DOW JONES & CO INC             260561105            847,656.25         12500       X                   0              0      12

 DPL INC                        233293109             16,046.13           937  X                        0              0
                                                     437,971.88         25575       X                   0              0      25
                                              ----------------- --------------               -------------     ---------- ------
                                                     454,018.01         26512                           0              0      26

 DU PONT E I DE NEMOURS         263534109          2,026,820.28         31122  X                        0              0      31
                                                  20,820,730.80        319704       X                   0              0     319
                                              ----------------- --------------               -------------     ---------- ------
                                                  22,847,551.08        350826                           0              0     350

 DUKE ENERGY CORP               264399106            164,784.38          3255  X                        0              0       3
                                                     289,423.13          5717       X                   0              0       5
                                              ----------------- --------------               -------------     ---------- ------
                                                     454,207.51          8972                           0              0       8

 DUN & BRADSTREET CORP          26483B106              1,821.25            62  X                        0              0
                                                     604,743.14         20587       X                   0              0      20
                                              ----------------- --------------               -------------     ---------- ------
                                                     606,564.39         20649                           0              0      20

 E M C CORP MASS                268648102          9,157,695.75         83063  X                     1600              0      81
                                                  42,219,465.75        382943       X                   0              0     382
                                              ----------------- --------------               -------------     ---------- ------
                                                  51,377,161.50        466006                        1600              0     464

 E TOWN                         269242103            458,337.50          7400       X                   0              0       7

 EASTMAN KODAK CO               277461109            560,942.00          8564       X                   0              0       8

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 84,125,494.49        951098                        1600              0     949
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     14
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 EATON VANCE CORP NON VTG       278265103            363,000.00          9600       X                   0              0       9
 EATON VANCE CORP NON VTG       278265103            363,000.00          9600       X                   0              0       9

 EDO CORP                       281347104            135,700.00         23600       X                   0              0      23

 EDUCATION PARTNERS LP III      2813909B2                  0.00         12365       X                   0              0      12

 EL PASO ENERGY CORP            283905107             81,923.00          2074  X                        0              0       2
                                                   2,221,875.00         56250       X                   0              0      56
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,303,798.00         58324                           0              0      58

 ELAN PLC ADR                   284131208            191,157.75          6678  X                        0              0       6
                                                   4,980,921.75        174006       X                   0              0     174
                                              ----------------- --------------               -------------     ---------- ------
                                                   5,172,079.50        180684                           0              0     180

 EMERSON ELEC CO                291011104          1,253,414.25         21846  X                        0              0      21
                                                   9,804,985.88        170893       X                   0              0     170
                                              ----------------- --------------               -------------     ---------- ------
                                                  11,058,400.13        192739                           0              0     192
                                                  11,058,400.13        192739                           0              0     192

 EMPOWER                        2921999A6            200,000.00        100000       X                   0              0     100

 ENERGYNORTH INC                292925104            987,635.00         17957       X                   0              0      17

 ENRON CORP                     293561106          1,045,804.50         23634  X                        0              0      23
                                                   2,983,512.00         67424       X                   0              0      67
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,029,316.50         91058                           0              0      91

 EPICON INC                     2942559C0                  0.00        108350       X                   0              0     108

 EQUIFAX INC                    294429105             83,318.88          3574  X                        0              0       3
                                                     307,725.00         13200       X                   0              0      13
                                              ----------------- --------------               -------------     ---------- ------
                                                     391,043.88         16774                           0              0      16

 EQUITY OFFICE PPTYS TR         294741103            298,235.26         12204  X                        0              0      12
                                                   4,470,865.24        182951       X                   0              0     182
                                                   4,470,865.24        182951       X                   0              0     182
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 29,410,073.51       1006606                           0              0    1006
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     15
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                   4,769,100.50        195155                           0              0     195

 EXPEDITORS INTL WASH INC       302130109             51,450.00          1200  X                        0              0       1
                                                     235,812.50          5500       X                   0              0       5
                                              ----------------- --------------               -------------     ---------- ------
                                                     287,262.50          6700                           0              0       6

 EXXON MOBIL CORP               30231G102         27,369,342.06        340256  X                     1000              0     339
                                                 162,888,190.08       2025028       X                1550              0    2023
                                              ----------------- --------------               -------------     ---------- ------
                                                 190,257,532.14       2365284                        2550              0    2362

 FEDERAL NATL MTG ASSN          313586109            584,038.13          9439  X                        0              0       9
                                                   1,922,703.76         31074       X                   0              0      31
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,506,741.89         40513                           0              0      40
                                                   2,506,741.89         40513                           0              0      40

 FEDERAL RLTY INVT TR           313747206            187,500.00         10000       X                   0              0      10

 FIDUCIARY CO INC               316476902            270,375.00          1250       X                   0              0       1

 FIFTH THIRD BANCORP            316773100            120,574.87          1637  X                        0              0       1
                                                     220,968.00          3000       X                   0              0       3
                                              ----------------- --------------               -------------     ---------- ------
                                                     341,542.87          4637                           0              0       4

 FIRST DATA CORP                319963104            501,250.00         10000  X                        0              0      10

 FIRST UNION CORP               337358105             16,718.75           500  X                        0              0
                                                     850,148.45         25425       X                   0              0      25
                                              ----------------- --------------               -------------     ---------- ------
                                                     866,867.20         25925                           0              0      25

 FIRST WASHINGTON REALTY TRUST  337489504            226,500.00         12000       X                   0              0      12


 FIRSTAR CORP NEW WIS           33763V109          3,623,025.00        172525       X                   0              0     172

 FLEETBOSTON FINANCIAL CORP     339030108          1,912,974.96         54559  X                        0              0      54
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                200,981,571.56       2703393                        2550              0    2700
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     16
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------


                                                  11,168,002.34        318517       X                   0              0     318
                                              ----------------- --------------               -------------     ---------- ------
                                                  13,080,977.30        373076                           0              0     373

 FOCUS ENHANCEMENT              344159108             12,596.44          1493  X                        0              0       1
                                                     498,162.66         59045       X                   0              0      59
                                              ----------------- --------------               -------------     ---------- ------
                                                     510,759.10         60538                           0              0      60

 FPL GROUP INC                  302571104            102,450.00          2400  X                        0              0       2
                                                     452,871.69         10609       X                   0              0      10
                                              ----------------- --------------               -------------     ---------- ------
                                                     555,321.69         13009                           0              0      13


 GAMEWRIGHT INC                 364625996              6,250.00          6250  X                        0              0       6
                                                     156,150.00        156150       X                   0              0     156
                                              ----------------- --------------               -------------     ---------- ------
                                                     162,400.00        162400                           0              0     162

 GANNETT INC                    364730101              2,430.00            30  X                        0              0
                                                     719,442.00          8882       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                     721,872.00          8912                           0              0       8

 GELTEX PHARMACEUTICALS         368538104              6,806.25           550  X                        0              0
                                                     378,675.00         30600       X                   0              0      30
                                              ----------------- --------------               -------------     ---------- ------
                                                     385,481.25         31150                           0              0      31

 GENERAL ELEC CO                369604103         27,654,635.00        178417  X                     1600              0     176
                                                 273,418,295.00       1763989       X                   0              0    1763
                                              ----------------- --------------               -------------     ---------- ------
                                                 301,072,930.00       1942406                        1600              0    1940
                                                 301,072,930.00       1942406                        1600              0    1940

 GENERAL MLS INC                370334104            287,161.25          8132  X                        0              0       8
                                                   5,689,867.82        161129       X                   0              0     161
                                              ----------------- --------------               -------------     ---------- ------
                                                   5,977,029.07        169261                           0              0     169

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                320,553,795.45       2706193                        1600              0    2704
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     17
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)


                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 GENERAL MTRS CORP              370442105             43,575.00           600  X                        0              0
                                                     192,601.50          2652       X                   0              0       2
                                              ----------------- --------------               -------------     ---------- ------
                                                     236,176.50          3252                           0              0       3

 GENERAL MTRS CORP NEW H        370442832            746,000.00          8000  X                        0              0       8

 GENERAL ORTHOPEDICS            3719909F1                  0.00         18067  X                        0              0      18

 GENRAD INC                     372447102             35,076.50          2263  X                        0              0       2
                                                   1,874,182.50        120915       X                   0              0     120
                                                   1,874,182.50        120915       X                   0              0     120
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,909,259.00        123178                           0              0     123

 GENUINE PARTS CO               372460105            395,000.00         16000       X                   0              0      16

 GENZYME CORP                   372917104            849,991.50         18428  X                        0              0      18
                                                  12,401,305.88        268863       X                   0              0     268
                                              ----------------- --------------               -------------     ---------- ------
                                                  13,251,297.38        287291                           0              0     287

 GENZYME CORP TISSUE REPAIR     372917401              3,042.73          1036  X                        0              0       1
                                                     196,156.36         66788       X                   0              0      66
                                              ----------------- --------------               -------------     ---------- ------
                                                     199,199.09         67824                           0              0      67

 GENZYME SURGICAL PRODUCTS      372917609                744.88           137  X                        0              0
                                                      86,692.99         15945       X                   0              0      15
                                              ----------------- --------------               -------------     ---------- ------
                                                      87,437.87         16082                           0              0      16
                                                      87,437.87         16082                           0              0      16

 GEOPETRO COMPANY               373160993            151,000.00        302000       X                   0              0     302

 GEORGIA PAC CORP               373298108            620,631.00         12538       X                   0              0      12

 GILLETTE CO                    375766102          3,947,253.43         95258  X                        0              0      95
                                                  25,701,982.64        620259       X                   0              0     620


                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 47,245,236.91       1569749                           0              0    1569
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     18
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999



  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                  29,649,236.07        715517                           0              0     715

 GOLDMAN SACHS GROUP            38141G104            212,031.25          2300  X                        0              0       2

 GRAINGER W W INC               384802104            502,080.00         10460  X                        0              0      10

 GREAT LAKES CHEM CORP          390568103            121,400.00          3200  X                        0              0       3
 GREAT LAKES CHEM CORP          390568103            121,400.00          3200  X                        0              0       3
                                                     962,284.69         25365       X                   0              0      25
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,083,684.69         28565                           0              0      28

 GREEN POWER ASIA LTD           393400999                  0.00        620375       X                   0              0     620

 GSI LUMONICS                   36229U102            568,231.95         67350       X                   0              0      67

 GTE CORP                       362320103          1,057,032.50         15020  X                        0              0      15
                                                  17,221,311.78        244708       X                   0              0     244
                                              ----------------- --------------               -------------     ---------- ------
                                                  18,278,344.28        259728                           0              0     259

 HALLIBURTON CO                 406216101            148,528.75          3833  X                        0              0       3
                                                     531,650.00         13720       X                   0              0      13
                                              ----------------- --------------               -------------     ---------- ------
                                                     680,178.75         17553                           0              0      17

 HANNAFORD BROS CO              410550107            516,562.50          7500       X                   0              0       7
 HANNAFORD BROS CO              410550107            516,562.50          7500       X                   0              0       7

 HARDING ENERGY INC             411699911            416,000.00          1664       X                   0              0       1

 HARTFORD FINL SVCS GROUP       416515104             86,595.00          1840  X                        0              0       1
                                                     567,856.13         12066       X                   0              0      12
                                              ----------------- --------------               -------------     ---------- ------
                                                     654,451.13         13906                           0              0      13

 HEALTHEON/WEBMD CORP           422209106            236,325.00          6250       X                   0              0       6

 HEARST-ARGYLE TELEVISION INC.  422317107            372,594.75         14262       X                   0              0      14

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 23,520,484.30       1049913                           0              0    1049
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     19
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 HEINZ H J CO                   423074103              6,981.75           174  X                        0              0
                                                     314,339.25          7834       X                   0              0       7
                                              ----------------- --------------               -------------     ---------- ------
                                                     321,321.00          8008                           0              0       8


 HELIX TECHNOLOGY CORP          423319102            570,900.00         13200       X                   0              0      13

 HEMAGEN DIAGNOSTICS INC        423501105             74,023.00         79000       X                   0              0      79

 HEWLETT PACKARD CO             428236103          4,123,299.25         35777  X                        0              0      35
                                                  58,431,750.00        507000       X                   0              0     507
                                              ----------------- --------------               -------------     ---------- ------
                                                  62,555,049.25        542777                           0              0     542

 HITCHINER MFG CO INC           43363*101            355,408.00          4850       X                   0              0       4

 HOME DEPOT INC                 437076102         11,962,682.04        117066  X                     2700              0     114
                                                 110,617,867.16       1082499       X                   0              0    1082
                                              ----------------- --------------               -------------     ---------- ------
                                                 122,580,549.20       1199565                        2700              0    1196

 HONEYWELL INTL INC             438516106            141,875.00          2500  X                        0              0       2
                                                     192,950.00          3400       X                   0              0       3
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                     334,825.00          5900                           0              0       5

 HOUGHTON MIFFLIN CO            441560109          2,520,000.00         60000       X                   0              0      60

 HSB GROUP INC                  40428N109             40,125.00          1200  X                        0              0       1
                                                     337,317.51         10088       X                   0              0      10
                                              ----------------- --------------               -------------     ---------- ------
                                                     377,442.51         11288                           0              0      11

 HUBBELL INC B                  443510201             48,010.13          1734  X                        0              0       1
                                                   3,704,393.70        133793       X                   0              0     133
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,752,403.83        135527                           0              0     135

 I2 TECHNOLOGIES INC            465754109          5,983,110.00         30000       X                   0              0      30
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                199,425,031.79       2090115                        2700              0    2087
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     20
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------


 IBM CORP                       459200101          5,836,395.00         53668  X                      200              0      53
 IBM CORP                       459200101          5,836,395.00         53668  X                      200              0      53
                                                  53,946,851.25        496063       X                   0              0     496
                                              ----------------- --------------               -------------     ---------- ------
                                                  59,783,246.25        549731                         200              0     549

 IDEXX LABORATORIES INC         45168D104            163,242.69         10243       X                   0              0      10

 ILLINOIS GAS CO                4520459A7          1,200,000.00           600       X                   0              0

 ILLINOIS TOOL WKS INC          452308109            324,534.38          4950  X                        0              0       4
                                                     371,477.12          5666       X                   0              0       5
                                              ----------------- --------------               -------------     ---------- ------
                                                     696,011.50         10616                           0              0      10

 IMATRON INC                    452906100             25,310.00         10000       X                   0              0      10

 IMS HEALTH INCORPORATED        449934108          1,361,044.22         50526  X                        0              0      50
                                                  15,564,191.28        577789       X                   0              0     577
                                              ----------------- --------------               -------------     ---------- ------
                                                  16,925,235.50        628315                           0              0     628
                                                  16,925,235.50        628315                           0              0     628

 INFORMATION MAPPING INC        4567099A4                  0.00         28667       X                   0              0      28

 INTEL CORP                     458140100         10,907,763.59        130340  X                      500              0     129
                                                  86,926,272.71       1038707       X                   0              0    1038
                                              ----------------- --------------               -------------     ---------- ------
                                                  97,834,036.30       1169047                         500              0    1168

 INTERNATIONAL PAPER C0         460146103             32,373.00           594  X                        0              0
                                                   2,004,782.50         36785       X                   0              0      36
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,037,155.50         37379                           0              0      37

 INTERNET CAPITAL GROUP INC     46059C106             99,150.00           600  X                        0              0
                                                     165,250.00          1000       X                   0              0       1
                                              ----------------- --------------               -------------     ---------- ------
                                                     264,400.00          1600                           0              0       1
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                178,928,637.74       2446198                         700              0    2445
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     21
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------


 INTERPUBLIC GROUP COS          460690100          2,873,170.17         52121  X                      600              0      51
                                                  42,391,290.38        769003       X                   0              0     769
                                              ----------------- --------------               -------------     ---------- ------
                                                  45,264,460.55        821124                         600              0     820

 INTL FLAVORS & FRAGRANCES      459506101            225,000.00          6000       X                   0              0       6

 INVESTORS FINL SVCS            461915100          1,722,637.50         37500       X                   0              0      37

 IPALCO ENTERPRISES INC         462613100            168,254.25         10236       X                   0              0      10

 JDS UNIPHASE CORP              46612J101          3,933,000.00         24000       X                   0              0      24

 JEFFERSON PILOT CORP           475070108             10,087.50           150  X                        0              0
                                                     728,990.00         10840       X                   0              0      10
                                              ----------------- --------------               -------------     ---------- ------
                                                     739,077.50         10990                           0              0      10


 JML CORP                       4662189D8            311,540.00          1000       X                   0              0       1

 JOHNSON & JOHNSON              478160104          2,930,196.50         31339  X                      200              0      31
                                                  24,941,779.50        266757       X                   0              0     266
                                              ----------------- --------------               -------------     ---------- ------
                                                  27,871,976.00        298096                         200              0     297

 JOHNSON CTLS INC               478366107            265,098.00          4692       X                   0              0       4

 KIMBERLY CLARK CORP            494368103            319,800.00          4920  X                        0              0       4
                                                   8,089,120.00        124448       X                   0              0     124
                                              ----------------- --------------               -------------     ---------- ------
                                                   8,408,920.00        129368                           0              0     129

 KINNEY OIL CO                  496625997                  0.00         14952       X                   0              0      14

 KLA-TENCOR CORP                482480100          8,827,014.70         81215  X                        0              0      81

 LEADVILLE CORP                 5217119A1            136,308.75        181745       X                   0              0     181
 LEADVILLE CORP                 5217119A1            136,308.75        181745       X                   0              0     181

 LILLY ELI & CO                 532457108          1,349,035.00         20060  X                        0              0      20
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 99,222,322.25       1640978                         800              0    1640
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     22
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                   7,107,518.00        105688       X                   0              0     105
                                              ----------------- --------------               -------------     ---------- ------
                                                   8,456,553.00        125748                           0              0     125

 LINCOLN NATL CORP IND          534187109            317,000.00          8000       X                   0              0       8

 LINEAR TECHNOLOGY CORP         535678106          3,601,714.74         50953  X                        0              0      50
                                                  37,317,151.72        527921       X                   0              0     527
                                              ----------------- --------------               -------------     ---------- ------
                                                  40,918,866.46        578874                           0              0     578

 LUCENT TECHNOLOGIES INC        549463107          7,799,652.08        104256  X                     1800              0     102
                                                  41,778,367.41        558441       X                   0              0     558
                                              ----------------- --------------               -------------     ---------- ------
                                                  49,578,019.49        662697                        1800              0     660
                                                  49,578,019.49        662697                        1800              0     660

 M & T BANK CORP                55261F104            564,282.00          1363  X                        0              0       1

 M C I WORLDCOM INC             55268B106          3,365,658.77         42402  X                     2025              0      40
                                                   9,697,164.38        122169       X                   0              0     122
                                              ----------------- --------------               -------------     ---------- ------
                                                  13,062,823.15        164571                        2025              0     162

 MACDERMID INC                  554273102            520,000.00         13000       X                   0              0      13

 MARSH & MCLENNAN COS           571748102            810,207.25          8551  X                        0              0       8
                                                     830,199.50          8762       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,640,406.75         17313                           0              0      17

 MASCO CORP                     574599106            429,870.50         16694  X                        0              0      16
                                                  19,823,071.00        769828       X                   0              0     769
                                              ----------------- --------------               -------------     ---------- ------
                                                  20,252,941.50        786522                           0              0     786
                                                  20,252,941.50        786522                           0              0     786

 MATRITECH INC                  576818108            291,371.60         81800       X                   0              0      81

 MAXIM INTERGRATED PRODUCTS INC 57772K101            875,178.00         19000  X                        0              0      19

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                135,128,406.95       2438828                        3825              0    2435
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     23
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 MAY DEPT STORES CO             577778103             28,800.00           900  X                        0              0
                                                     228,608.00          7144       X                   0              0       7
                                              ----------------- --------------               -------------     ---------- ------
                                                     257,408.00          8044                           0              0       8

 MBIA INC                       55262C100            273,508.75          5185  X                        0              0       5
                                                  18,745,503.75        355365       X                   0              0     355
                                              ----------------- --------------               -------------     ---------- ------
                                                  19,019,012.50        360550                           0              0     360

 MBNA CORP                      55262L100            301,930.00         11080  X                        0              0      11
                                                      93,058.75          3415       X                   0              0       3
                                                      93,058.75          3415       X                   0              0       3
                                              ----------------- --------------               -------------     ---------- ------
                                                     394,988.75         14495                           0              0      14

 MCDONALDS CORP                 580135101          1,663,366.26         41780  X                        0              0      41
                                                   3,133,562.25         78708       X                   0              0      78
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,796,928.51        120488                           0              0     120

 MCGRAW HILL COS INC            580645109             24,425.00           400  X                        0              0
                                                     490,942.50          8040       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                     515,367.50          8440                           0              0       8

 MEDIA ONE GROUP INC            58440J104             16,892.69           221  X                        0              0
                                                   5,484,161.32         71747       X                   0              0      71
                                              ----------------- --------------               -------------     ---------- ------
                                                   5,501,054.01         71968                           0              0      71

 MEDTRONIC INC                  585055106          1,402,930.01         38240  X                     2000              0      36
 MEDTRONIC INC                  585055106          1,402,930.01         38240  X                     2000              0      36
                                                   3,593,907.50         97960       X                   0              0      97
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,996,837.51        136200                        2000              0     134

 MELLON FINANCIAL CORP          58551A108             13,675.00           400  X                        0              0
                                                     765,800.00         22400       X                   0              0      22


                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 36,261,071.78        742985                        2000              0     740
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     24
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999



 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                     779,475.00         22800                           0              0      22

 MERCK & CO INC                 589331107         81,477,397.03       1201510  X                      500              0    1201
                                                 186,821,471.28       2754971       X                   0              0    2754
                                              ----------------- --------------               -------------     ---------- ------
                                                 268,298,868.31       3956481                         500              0    3955

 META GROUP INC                 591002100            151,829.00          7991  X                        0              0       7
 META GROUP INC                 591002100            151,829.00          7991  X                        0              0       7
                                                   1,661,816.00         87464       X                   0              0      87
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,813,645.00         95455                           0              0      95

 MGI PPTYS                      552885105             32,550.00          6200  X                        0              0       6
                                                     841,370.25        160261       X                   0              0     160
                                              ----------------- --------------               -------------     ---------- ------
                                                     873,920.25        166461                           0              0     166

 MICROMUSE INC                  595094103            608,248.00          4000       X                   0              0       4

 MICROSOFT CORP                 594918104          9,724,882.18         82677  X                     1300              0      81
                                                  90,707,459.77        771158       X                   0              0     771
                                              ----------------- --------------               -------------     ---------- ------
                                                 100,432,341.95        853835                        1300              0     852

 MILLIPORE CORP                 601073109          7,871,852.32        203802       X                   0              0     203

 MINNESOTA MNG & MFG CO         604059105          2,371,017.76         24602  X                        0              0      24
 MINNESOTA MNG & MFG CO         604059105          2,371,017.76         24602  X                        0              0      24
                                                  25,235,119.15        261843       X                   0              0     261
                                              ----------------- --------------               -------------     ---------- ------
                                                  27,606,136.91        286445                           0              0     286

 MONSANTO CO                    611662107            367,581.25         10300  X                        0              0      10
                                                   3,387,279.09         94915       X                   0              0      94
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,754,860.34        105215                           0              0     105

 MORGAN J P & CO INC            616880100            917,831.27          7252  X                        0              0       7
                                                   4,233,135.94         33447       X                   0              0      33
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                416,410,840.29       5712393                        1800              0    5710
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     25
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001


                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                   5,150,967.21         40699                           0              0      40

 MORGAN STANLEY DEAN WITTER     617446448             42,375.00           300  X                        0              0
                                                     308,490.00          2184       X                   0              0       2
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                     350,865.00          2484                           0              0       2

 MOTOROLA INC                   620076109          1,180,000.00          8000  X                        0              0       8
                                                  16,433,712.50        111415       X                   0              0     111
                                              ----------------- --------------               -------------     ---------- ------
                                                  17,613,712.50        119415                           0              0     119

 MYLAN LABS INC                 628530107              4,912.50           200  X                        0              0
                                                     440,872.32         17949       X                   0              0      17
                                              ----------------- --------------               -------------     ---------- ------
                                                     445,784.82         18149                           0              0      18

 NATIONAL CITY CORP             635405103            321,111.00         13592       X                   0              0      13

 NATIONAL SEMICONDUCTOR         637640103            255,000.00          6000       X                   0              0       6

 NETWORK APPLIANCE INC          64120L104          1,561,700.00         18400       X                   0              0      18

 NEW ENGLAND BUSINESS SVC       643872104            994,308.50         42311       X                   0              0      42
 NEW ENGLAND BUSINESS SVC       643872104            994,308.50         42311       X                   0              0      42

 NEWELL RUBBERMAID INC.         651229106            130,900.00          4400  X                        0              0       4
                                                      84,400.75          2837       X                   0              0       2
                                              ----------------- --------------               -------------     ---------- ------
                                                     215,300.75          7237                           0              0       7

 NORDSTROM INC                  655664100            847,251.00         32744       X                   0              0      32

 NORTHERN TR CORP               665859104            148,888.25          2766  X                        0              0       2
                                                   3,111,258.40         57800       X                   0              0      57
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,260,146.65         60566                           0              0      60

 NOVELL INC                     670006105            169,591.50          4500  X                        0              0       4
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 26,034,771.72        325398                           0              0     325
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     26
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                     339,183.00          9000       X                   0              0       9
                                              ----------------- --------------               -------------     ---------- ------
                                                     508,774.50         13500                           0              0      13
                                                     508,774.50         13500                           0              0      13

 NOVEN PHARMACEUTICALS          670009109          1,337,765.64         79275       X                   0              0      79

 O REILLY AUTOMOTIVE INC        686091109            426,021.64         20470  X                     2000              0      18
                                                   1,058,914.56         50880       X                   0              0      50
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,484,936.20         71350                        2000              0      69

 OBJECT DESIGN INC              674416102             97,559.00          7000  X                        0              0       7
                                                     666,885.45         47850       X                   0              0      47
                                              ----------------- --------------               -------------     ---------- ------
                                                     764,444.45         54850                           0              0      54

 OCEAN NATL CORP                674856109            315,210.00          3318       X                   0              0       3

 OMNICOM GROUP INC              681919106             79,750.00           800  X                        0              0
                                                     162,889.38          1634       X                   0              0       1
                                              ----------------- --------------               -------------     ---------- ------
                                                     242,639.38          2434                           0              0       2
                                                     242,639.38          2434                           0              0       2

 ONE VALLEY BANCORP INC         682419106            656,253.03         22152       X                   0              0      22

 OVERSEAS PARTNERS LTD          690350921          5,155,701.76        259864       X                   0              0     259

 PANERA BREAD CO                69840W108             11,250.00          1500  X                        0              0       1
                                                     153,225.00         20430       X                   0              0      20
                                              ----------------- --------------               -------------     ---------- ------
                                                     164,475.00         21930                           0              0      21

 PARAMETRIC TECHNOLOGY CRP      699173100            626,014.25         22973  X                        0              0      22
                                                   6,398,354.50        234802       X                   0              0     234
                                              ----------------- --------------               -------------     ---------- ------
                                                   7,024,368.75        257775                           0              0     257

 PAYCHEX INC                    704326107          4,563,267.52        109465  X                     2000              0     107
                                                  66,640,463.31       1598591       X                   0              0    1598
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 88,688,708.04       2490004                        4000              0    2486
          SUBTOTALS FOR THIS PAGE                 88,688,708.04       2490004                        4000              0    2486
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     27
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------


                                              ----------------- --------------               -------------     ---------- ------
                                                  71,203,730.83       1708056                        2000              0    1706

 PE CORP - CELLERA GENOMICS     69332S201             16,250.00           100  X                        0              0
 GROUP
                                                     975,000.00          6000       X                   0              0       6
                                              ----------------- --------------               -------------     ---------- ------
                                                     991,250.00          6100                           0              0       6

 PE CORP - PE BIOSYSTEMS GROUP  69332S102             95,900.00           800  X                        0              0
                                                     959,000.00          8000       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,054,900.00          8800                           0              0       8

 PEOPLES HERITAGE FINL GRP      711147108            164,008.26         10980       X                   0              0      10

 PEPSICO INC                    713448108          1,057,900.00         29800  X                        0              0      29
                                                   3,078,915.00         86730       X                   0              0      86
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,136,815.00        116530                           0              0     116

 PFIZER INC                     717081103          9,507,094.02        290848  X                        0              0     290
                                                  39,174,301.80       1198449       X                   0              0    1198
                                              ----------------- --------------               -------------     ---------- ------
                                                  48,681,395.82       1489297                           0              0    1489

 PHARMACIA & UPJOHN INC         716941109              8,745.31           193  X                        0              0
                                                     303,593.75          6700       X                   0              0       6
                                              ----------------- --------------               -------------     ---------- ------
                                                     312,339.06          6893                           0              0       6

 PHILIP MORRIS COS INC          718154107          1,010,390.31         42655       X                   0              0      42

 PHILLIPS PETE CO               718507106            433,069.13          9202       X                   0              0       9

 PHOTOSCAPE ASSOCIATES          7193469A8                  0.00         10000       X                   0              0      10

 PITNEY BOWES INC               724479100            230,606.25          4900  X                        0              0       4
 PITNEY BOWES INC               724479100            230,606.25          4900  X                        0              0       4
                                                   4,453,806.76         94636       X                   0              0      94
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 61,468,580.59       1799993                           0              0    1799
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     28
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>

 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                   4,684,413.01         99536                           0              0      99

 PMC COML TR                    693434102             20,250.00          2000  X                        0              0       2
                                                     494,100.00         48800       X                   0              0      48
                                              ----------------- --------------               -------------     ---------- ------
                                                     514,350.00         50800                           0              0      50

 PNC BK CORP                    693475105             78,312.50          1750  X                        0              0       1
                                                     979,219.50         21882       X                   0              0      21
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,057,532.00         23632                           0              0      23

 POINT THERAPEUTICS             9899469P5            125,000.00         12500       X                   0              0      12

 POLARIS VENTURE PARTNERS       731111910            180,641.00        180641       X                   0              0     180
 POLARIS VENTURE PARTNERS       731111910            180,641.00        180641       X                   0              0     180

 POLICY MGMT SYS CORP           731108106            867,543.25         33691       X                   0              0      33

 POLYMEDICA CORPORATION         731738100            651,000.00         28000       X                   0              0      28

 POTOMAC ELEC PWR CO            737679100            474,500.00         20800       X                   0              0      20

 POWERTEL INC                   73936C109            200,250.00          2000       X                   0              0       2

 PPG INDS INC                   693506107            379,725.00          6100  X                        0              0       6
                                                     261,450.00          4200       X                   0              0       4
                                              ----------------- --------------               -------------     ---------- ------
                                                     641,175.00         10300                           0              0      10

 PRIAM CORP                     741400105                  0.00         26550  X                        0              0      26

 PROCTER & GAMBLE CO            742718109         11,942,437.90        108939  X                     1000              0     107
                                                 115,620,500.94       1054691       X                   0              0    1054
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                 127,562,938.84       1163630                        1000              0    1162

 PROGRESSIVE CORP OHIO          743315103              1,111.88            15  X                        0              0
                                                   2,519,286.38         33987       X                   0              0      33
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                134,795,328.35       1586546                        1000              0    1585
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     29
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                   2,520,398.26         34002                           0              0      34

 PROVIDIAN FINL CORP            74406A102            178,333.25          1987  X                        0              0       1
                                                   2,426,481.00         27036       X                   0              0      27
                                              ----------------- --------------               -------------     ---------- ------
                                                   2,604,814.25         29023                           0              0      29

 PULITZER INC                   745769109            268,757.50          6740       X                   0              0       6

 PUMA TECHNOLOGY INC            745887109          4,889,800.00         42520  X                        0              0      42
                                                 136,052,130.00       1183062       X                   0              0    1183
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                 140,941,930.00       1225582                           0              0    1225

 QUALCOMM INC                   747525103          6,858,200.00         10600  X                        0              0      10
                                                  13,328,200.00         20600       X                   0              0      20
                                              ----------------- --------------               -------------     ---------- ------
                                                  20,186,400.00         31200                           0              0      31

 QUESTECH CORPORATION           4580999F7            164,250.00         36500       X                   0              0      36

 QUINTILES TRANSNATIONAL        748767100            459,000.00         24000       X                   0              0      24

 QWEST COMMUNICATIONS INTL INC  749121109          1,065,346.33         25328  X                     2000              0      23
                                                  13,872,636.37        329814       X                   0              0     329
                                              ----------------- --------------               -------------     ---------- ------
                                                  14,937,982.70        355142                        2000              0     353

 R & B FALCON CORP              74912E101            109,650.00          8600  X                        0              0       8
                                                     639,999.00         50196       X                   0              0      50
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                     749,649.00         58796                           0              0      58

 RAPID COMMUNICATION L P        753388990             50,000.00         50000       X                   0              0      50

 RAVINE BEECH CO INC            753865997          3,889,670.32         12887       X                   0              0      12

 RAYTHEON CO B                  755111408             97,498.51          3732  X                        0              0       3
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                184,349,952.28       1833602                        2000              0    1831
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     30
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999

  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)
  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                   3,984,532.75        152518       X                   0              0     152
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,082,031.26        156250                           0              0     156

 REED & BARTON CORP             758140909         16,195,321.08          9402  X                        0              0       9
                                                     993,905.58           577       X                   0              0
                                              ----------------- --------------               -------------     ---------- ------
                                                  17,189,226.66          9979                           0              0       9

 RELIANT ENERGY INC             75952J108             25,734.38          1125  X                        0              0       1
 RELIANT ENERGY INC             75952J108             25,734.38          1125  X                        0              0       1
                                                     183,732.00          8032       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                     209,466.38          9157                           0              0       9

 RELIASTAR FINL CORP            75952U103             74,693.75          1900  X                        0              0       1
                                                   3,722,893.76         94700       X                   0              0      94
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,797,587.51         96600                           0              0      96

 ROCHDALE CORP                  7713159A8            240,125.00         21250       X                   0              0      21

 ROUSE CO                       779273101            206,031.25          9500       X                   0              0       9

 SAFE ROOF SYSTEMS INC          793743A96            210,000.00          8400       X                   0              0       8

 SALEM OIL & GREASE             794438903            455,566.20           740       X                   0              0

 SAPIENT CORP                   803062108            159,450.00          1200  X                        0              0       1
                                                   1,476,905.63         11115       X                   0              0      11
                                                   1,476,905.63         11115       X                   0              0      11
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,636,355.63         12315                           0              0      12

 SARA LEE CORP                  803111103            204,700.00          9200  X                        0              0       9
                                                   1,425,112.50         64050       X                   0              0      64
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,629,812.50         73250                           0              0      73

 SBC COMMUNICATIONS INC         78387G103          3,206,269.09         67235  X                        0              0      67
                                                   6,113,966.86        128209       X                   0              0     128
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 38,878,939.83        589153                           0              0     589
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     31
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999
                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                              ----------------- --------------               -------------     ---------- ------
                                                   9,320,235.95        195444                           0              0     195

 SCHERING PLOUGH CORP           806605101          1,623,846.88         39070  X                     1000              0      38
                                                  11,632,637.23        279883       X                   0              0     279
                                              ----------------- --------------               -------------     ---------- ------
                                                  13,256,484.11        318953                        1000              0     317
                                                  13,256,484.11        318953                        1000              0     317

 SCHLUMBERGER LTD               806857108            957,863.00         16444  X                        0              0      16
                                                   6,982,835.25        119877       X                   0              0     119
                                              ----------------- --------------               -------------     ---------- ------
                                                   7,940,698.25        136321                           0              0     136

 SCHOLASTIC CORP                807066105            208,687.50          3500       X                   0              0       3

 SEALED AIR CORP NEW            81211K100            397,512.50          7700  X                        0              0       7
                                                  12,486,332.25        241866       X                   0              0     241
                                              ----------------- --------------               -------------     ---------- ------
                                                  12,883,844.75        249566                           0              0     249

 SHERWIN WILLIAMS CO            824348106            375,043.38         18578  X                        0              0      18
                                                   9,576,001.22        474353       X                   0              0     474
                                              ----------------- --------------               -------------     ---------- ------
                                                   9,951,044.60        492931                           0              0     492

 SIGMA ALDRICH CORP             826552101            210,000.00          7000  X                        0              0       7
 SIGMA ALDRICH CORP             826552101            210,000.00          7000  X                        0              0       7
                                                      42,000.00          1400       X                   0              0       1
                                              ----------------- --------------               -------------     ---------- ------
                                                     252,000.00          8400                           0              0       8

 SKLAR CORP                     8306299A1                  0.00         10000       X                   0              0      10

 SOLUTIA INC                    834376105            194,990.00         12580       X                   0              0      12

 SONAMED CORP                   8354099C9          1,972,000.00        493000       X                   0              0     493

 SPECIALITY RETAIL GROUP INC    8475129A0             50,000.00         10000       X                   0              0      10

 SPRINT CORP FON GROUP          852061100        128,291,306.29       1909452  X                        0              0    1909
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                175,001,055.50       3644703                        1000              0    3643
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     32
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                  14,643,381.31        217948       X                   0              0     217
                                              ----------------- --------------               -------------     ---------- ------
                                                 142,934,687.60       2127400                           0              0    2127


 SPRINT CORP PCS SER 1          852061506         49,921,066.14        486738  X                     1000              0     485
                                                   5,389,454.34         52548       X                   0              0      52
                                              ----------------- --------------               -------------     ---------- ------
                                                  55,310,520.48        539286                        1000              0     538

 ST PAUL COS INC                792860108            718,638.75         21492       X                   0              0      21

 STAPLES INC                    855030102          3,149,040.75        151761  X                     2000              0     149
                                                  22,055,673.00       1062924       X                   0              0    1062
                                              ----------------- --------------               -------------     ---------- ------
                                                  25,204,713.75       1214685                        2000              0    1212

 STATE STREET CORP              857477103          2,286,144.91         31157  X                        0              0      31
                                                  40,259,101.50        548676       X                   0              0     548
                                              ----------------- --------------               -------------     ---------- ------
                                                  42,545,246.41        579833                           0              0     579

 STRYKER CORP                   863667101            630,562.50          9000  X                        0              0       9
                                                     602,537.50          8600       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,233,100.00         17600                           0              0      17

 SUMMIT BANCORP                 866005101             94,743.78          3100  X                        0              0       3
                                                   1,691,634.38         55350       X                   0              0      55
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,786,378.16         58450                           0              0      58

 SUN MICROSYSTEMS INC           866810104          1,584,427.40         20200       X                   0              0      20

 SUNTRUST BKS INC               867914103            440,524.51          6396  X                        0              0       6
                                                  19,599,827.63        284571       X                   0              0     284
                                              ----------------- --------------               -------------     ---------- ------
                                                  20,040,352.14        290967                           0              0     290

 SYSCO CORP                     871829107            807,300.00         20700  X                      700              0      20
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                163,874,058.40       2981161                        3700              0    2977
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     33
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


  HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

                                                   4,162,548.00        106732       X                   0              0     106
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,969,848.00        127432                         700              0     126

 TECO ENERGY INC                872375100             27,094.00          1426  X                        0              0       1
                                                   1,149,006.00         60474       X                   0              0      60
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,176,100.00         61900                           0              0      61

 TEKTRONIX INC                  879131100             24,907.50           648  X                        0              0
                                                   3,532,483.21         91902       X                   0              0      91
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,557,390.71         92550                           0              0      92

 TELEFONICA DE ESPANA S A ADR   879382208            484,245.00          6120       X                   0              0       6

 TELLABS INC                    879664100          3,131,250.00         50000       X                   0              0      50

 TEMPLE INLAND INC              879868107            358,386.50          5578       X                   0              0       5


 TERADYNE INC                   880770102          3,705,480.00         63072       X                   0              0      63

 TEXACO INC                     881694103            147,886.88          2745  X                        0              0       2
                                                   5,734,185.63        106435       X                   0              0     106
                                              ----------------- --------------               -------------     ---------- ------
                                                   5,882,072.51        109180                           0              0     109

 TEXAS INSTRS INC               882508104          2,129,109.38         21425  X                     1000              0      20
                                                  10,099,481.25        101630       X                   0              0     101
                                              ----------------- --------------               -------------     ---------- ------
                                                  12,228,590.63        123055                        1000              0     122

 TEXAS UTILS CO                 882848104            328,886.25          9380       X                   0              0       9

 THERMO ELECTRON CORP           883556102             67,404.69          4475  X                        0              0       4
                                                     306,476.69         20347       X                   0              0      20
                                              ----------------- --------------               -------------     ---------- ------
                                                     373,881.38         24822                           0              0      24


                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 35,388,830.98        652389                        1000              0     651
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     34
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 THOMAS & BETTS CORP            884315102             15,812.50           500  X                        0              0
                                                     189,750.00          6000       X                   0              0       6
                                              ----------------- --------------               -------------     ---------- ------
                                                     205,562.50          6500                           0              0       6

 TIME WARNER INC                887315109          2,070,640.00         28960  X                     1800              0      27
                                                  11,206,695.50        156737       X                   0              0     156
                                              ----------------- --------------               -------------     ---------- ------
                                                  13,277,335.50        185697                        1800              0     183

 TIMES MIRROR CO NEW A          887364107            231,752.50          3485  X                        0              0       3
                                                   1,044,183.00         15702       X                   0              0      15
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,275,935.50         19187                           0              0      19

 TRANSFUSION TECHNOLOGIES       893650994            151,200.00         16800       X                   0              0      16


 TRIBUNE CO                     896047107            583,875.00         10800  X                     2000              0       8
                                                 109,647,291.88       2028158       X                   0              0    2028
                                              ----------------- --------------               -------------     ---------- ------
                                                 110,231,166.88       2038958                        2000              0    2036

 TRUSTCO BANK N Y               898349105            197,808.00         15216  X                        0              0      15

 TRW INC                        872649108            970,985.25         18763  X                        0              0      18
                                                   3,212,640.00         62080       X                   0              0      62
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,183,625.25         80843                           0              0      80

 TYCO INTL LTD NEW              902124106          1,675,591.75         44534  X                        0              0      44
                                                  84,391,370.00       2242960       X                   0              0    2242
                                              ----------------- --------------               -------------     ---------- ------
                                                  86,066,961.75       2287494                           0              0    2287

 U S WEST INC NEW               91273H101              8,773.44           125  X                        0              0
                                                     532,372.20          7585       X                   0              0       7
                                                     532,372.20          7585       X                   0              0       7
                                              ----------------- --------------               -------------     ---------- ------
                                                     541,145.64          7710                           0              0       7

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                216,130,741.02       4658405                        3800              0    4654
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     35
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 UNION PAC CORP                 907818108             40,909.38           950  X                        0              0
                                                     698,818.26         16228       X                   0              0      16
                                              ----------------- --------------               -------------     ---------- ------
                                                     739,727.64         17178                           0              0      17

 UNITED PARCEL SERVICE CLASS A  911308104            135,730.00          1960  X                        0              0       1
                                                 134,786,676.50       1946378       X                   0              0    1946
                                              ----------------- --------------               -------------     ---------- ------
                                                 134,922,406.50       1948338                           0              0    1948

 UNITED PARCEL SERVICE CLASS B  911312106            207,750.00          3000  X                        0              0       3
                                                     554,000.00          8000       X                   0              0       8
                                              ----------------- --------------               -------------     ---------- ------
                                                     761,750.00         11000                           0              0      11
                                                     761,750.00         11000                           0              0      11

 UNITED TECHNOLOGIES CORP       913017109          2,673,691.89         41695  X                        0              0      41
                                                  27,673,079.63        431549       X                   0              0     431
                                              ----------------- --------------               -------------     ---------- ------
                                                  30,346,771.52        473244                           0              0     473

 UNOCAL CORP                    915289102            347,592.51         10280       X                   0              0      10

 US BANCORP DEL                 902973106            752,054.47         31749  X                        0              0      31
                                                   3,949,559.02        166736       X                   0              0     166
                                              ----------------- --------------               -------------     ---------- ------
                                                   4,701,613.49        198485                           0              0     198

 UST INC                        902911106            602,371.88         23450       X                   0              0      23

 USX-MARATHON GROUP             902905827                872.81            35  X                        0              0
                                                     851,815.13         34158       X                   0              0      34
                                              ----------------- --------------               -------------     ---------- ------
                                                     852,687.94         34193                           0              0      34
                                                     852,687.94         34193                           0              0      34

 VALSPAR CORP                   920355104            406,999.13          9822  X                        0              0       9

 VARIAN INC                     922206107            576,684.72         25560       X                   0              0      25

 VARIAN MEDICAL SYSTEMS INC     92220P105          1,640,868.75         56460       X                   0              0      56
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                175,899,474.08       2808010                           0              0    2808
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     36
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)


                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------


 VARIAN SEMICONDUCTOR EQUIPMENT 922207105            967,640.00         28460       X                   0              0      28
 ASSOC INC

 VERITAS SOFTWARE CORP          923436109          4,106,250.00         30000       X                   0              0      30

 VERTEX PHARMACEUTICALS         92532F100            237,290.63          6903  X                        0              0       6
                                                   9,851,875.03        286600       X                   0              0     286
                                              ----------------- --------------               -------------     ---------- ------
                                                  10,089,165.66        293503                           0              0     293


 VERTICALNET INC                92532L107            217,700.00          1400       X                   0              0       1

 VICOR CORP                     925815102          8,496,060.28        206120       X                   0              0     206

 VIEW TECH INC                  926707100             87,153.98         32814  X                        0              0      32

 VULCAN MATERIALS CO            929160109            270,180.00          6840  X                        0              0       6
                                                      18,723.00           474       X                   0              0
                                              ----------------- --------------               -------------     ---------- ------
                                                     288,903.00          7314                           0              0       7

 VULCAN POWER CO CL A COMMON    929187995                  0.00        206791       X                   0              0     206

 WACHOVIA CORP NEW              929771103             20,343.75           300  X                        0              0
                                                   3,434,431.88         50646       X                   0              0      50
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,454,775.63         50946                           0              0      50

 WAL MART STORES INC            931142103          2,319,187.50         34200  X                        0              0      34
 WAL MART STORES INC            931142103          2,319,187.50         34200  X                        0              0      34
                                                   6,517,595.02         96112       X                   0              0      96
                                              ----------------- --------------               -------------     ---------- ------
                                                   8,836,782.52        130312                           0              0     130

 WALGREEN CO                    931422109            760,650.00         26400  X                        0              0      26
                                                   2,640,031.75         91628       X                   0              0      91
                                              ----------------- --------------               -------------     ---------- ------
                                                   3,400,681.75        118028                           0              0     118

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 39,945,112.82       1105688                           0              0    1105
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     37
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                           As of 12/31/1999



 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 WARNER LAMBERT CO              934488107            318,016.13          3846  X                        0              0       3
                                                   5,111,741.25         61820       X                   0              0      61
                                              ----------------- --------------               -------------     ---------- ------
                                                   5,429,757.38         65666                           0              0      65

 WASHINGTON MUTUAL INC          939322103            106,459.38          4075  X                        0              0       4
                                                     889,425.63         34045       X                   0              0      34
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                     995,885.01         38120                           0              0      38

 WASHINGTON POST CO CL B        939640108            349,496.00           632  X                        0              0
                                                  14,469,245.00         26165       X                   0              0      26
                                              ----------------- --------------               -------------     ---------- ------
                                                  14,818,741.00         26797                           0              0      26

 WATSON PHARMACEUTICALS INC     942683103            239,525.00          6700  X                        0              0       6

 WEBCREDIT INC.                 9292999A5            471,480.00        157160       X                   0              0     157

 WELLS FARGO & CO               949746101            598,812.50         14740  X                        0              0      14
                                                     417,381.27         10274       X                   0              0      10
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,016,193.77         25014                           0              0      25

 WEST PHARMACEUTICAL SERVICES   955306105            250,087.50          8100       X                   0              0       8
 INC


 WESTERN PROPERTIES TRUST       959261108            188,750.00         20000       X                   0              0      20

 WEYERHAEUSER CO                962166104              7,093.75           100  X                        0              0
                                                   1,798,265.64         25350       X                   0              0      25
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,805,359.39         25450                           0              0      25

 WHOLE FOODS MKT INC            966837106             36,500.00           800  X                        0              0
                                                     349,487.50          7660       X                   0              0       7
                                              ----------------- --------------               -------------     ---------- ------
                                                     385,987.50          8460                           0              0       8

                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE                 25,601,766.55        381467                           0              0     381
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
 REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     38
 BUSINESS DATE: 12/31/1999                                                                                       R33.002.001


                                                           As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                               INVEST
                                                   MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
 NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED     NONE
 ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
 <S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
 COMMON (cont.)
 --------------

 WILEY JOHN & SONS INC          968223305            558,000.00         32000       X                   0              0      32

 WILEY JOHN & SONS INC A        968223206            831,000.00         48000       X                   0              0      48

 WILLIAMS COS INC               969457100             48,431.25          1575  X                        0              0       1
 WILLIAMS COS INC               969457100             48,431.25          1575  X                        0              0       1
                                                     212,021.25          6895       X                   0              0       6
                                              ----------------- --------------               -------------     ---------- ------
                                                     260,452.50          8470                           0              0       8

 WILMINGTON TR CORP             971807102             44,505.87           926  X                        0              0
                                                     514,268.75         10700       X                   0              0      10
                                              ----------------- --------------               -------------     ---------- ------
                                                     558,774.62         11626                           0              0      11

 WISCONSIN ENERGY CORP          976657106             66,901.88          3453  X                        0              0       3
                                                   1,405,656.26         72550       X                   0              0      72
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,472,558.14         76003                           0              0      76

 WPS RES CORP                   92931B106            422,100.00         16800       X                   0              0      16

 XEROX CORP                     984121103              8,235.00           360  X                        0              0
                                                   1,193,617.50         52180       X                   0              0      52
                                              ----------------- --------------               -------------     ---------- ------
                                              ----------------- --------------               -------------     ---------- ------
                                                   1,201,852.50         52540                           0              0      52

 ZAPWORLD.COM                   98912M102            150,000.00         12500       X                   0              0      12

 ZOLL MED CORP                  989922109            297,237.50          7900       X                   0              0       7

                                              ================= ==============               =============     ========== ======
 TOTALS FOR COMMON                             3,885,333,116.03      65245061                       43625              0   65201

                                              ================= ==============               =============     ========== ======
 GRAND TOTALS                                  3,885,333,116.03      65245061                       43625              0   65201
          PREFERRED
          ---------

 ARGUS SOFTWARE PFD             0402769C3              9,600.00          8000  X                        0              0       8
                                              ----------------- --------------               -------------     ---------- ------
          SUBTOTALS FOR THIS PAGE              7,776,427,807.32     130763961                       87250              0  130676
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     39
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                          As of 12/31/1999


HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
PREFERRED (cont.)
- -----------------

                                                    903,000.00        752500       X                   0              0     752
                                             ----------------- --------------               -------------     ---------- ------
                                             ----------------- --------------               -------------     ---------- ------
                                                    912,600.00        760500                           0              0     760

BANKAMERICA CAPITAL $1.938 PFD 066046202            220,625.00         10000       X                   0              0      10

BIZFON INC PFD Ser A           0910999A1             30,000.00         30000  X                        0              0      30
                                                    484,000.00        484000       X                   0              0     484
                                             ----------------- --------------               -------------     ---------- ------
                                                    514,000.00        514000                           0              0     514

BIZFON INC PFD Ser B           0910999B9              1,710.00           900  X                        0              0
                                                    470,058.10        247399       X                   0              0     247
                                             ----------------- --------------               -------------     ---------- ------
                                                    471,768.10        248299                           0              0     248

BIZFON INC. PFD Ser C          0910999C7             50,000.00         20000  X                        0              0      20
                                                     95,000.00         38000       X                   0              0      38
                                             ----------------- --------------               -------------     ---------- ------
                                                    145,000.00         58000                           0              0      58


BIZFON INC PFD Ser D           0910999D5            218,799.60        729332       X                   0              0     729

CABLESOFT CORP CV PFD Ser A    126910991                  0.00        522840       X                   0              0     522

CABLESOFT CORP CV PFD Ser B    126910983                  0.00         25902       X                   0              0      25

CABLESOFT CORP CV PFD Ser D    126910967                  0.00        147719       X                   0              0     147

CAIRNSTONE INC CV PFD Ser A    1277669D7                  0.00         11111       X                   0              0      11

CIPHERGEN BIOSYSTEMS INC PFD   172922916            120,000.00         60000       X                   0              0      60
Ser D

CORPORATION FOR LASER OPTICS   2200359B7             10,000.00          2500  X                        0              0       2
RESEARCH PFD Ser B
                                                    208,000.00         52000       X                   0              0      52


                                             ----------------- --------------               -------------     ---------- ------
                                             ----------------- --------------               -------------     ---------- ------
         SUBTOTALS FOR THIS PAGE                  2,811,192.70       3134203                           0              0    3134
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     40
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                          As of 12/31/1999


HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
PREFERRED (cont.)
- -----------------
- -----------------

                                             ----------------- --------------               -------------     ---------- ------
                                                    218,000.00         54500                           0              0      54

DELPHI FORUMS INC CV PFD Ser B 2471539B7            454,005.00        605340       X               32000              0     573

EDUCATION PARTNERS L P CV PFD  2813909A4                  0.00         15700       X                   0              0      15
Ser C

EMPOWER PFD Ser B              2921999B4            220,500.00         63000       X                   0              0      63

EMPOWER PFD Ser D              2921999D0            587,832.00        146958       X                   0              0     146

FAXNET CORPORATION PFD Ser D   3121019D2            808,000.00           808       X                   0              0

FAXNET CV PFD Ser B            3121019A8             25,000.00            25  X                        0              0
                                                    635,000.00           635       X                   0              0
                                             ----------------- --------------               -------------     ---------- ------
                                                    660,000.00           660                           0              0
                                                    660,000.00           660                           0              0

GENERAL ORTHOPEDICS CV PFD Ser 371990979                  0.00         42500  X                        0              0      42
C

GENERAL ORTHOPEDICS CV PFD Ser 371990953                  0.00         42875  X                        0              0      42
E

GENERAL ORTHOPEDICS CV PFD Ser 371990920                  0.00         61600  X                        0              0      61
F
                                                          0.00         34000       X                   0              0      34
                                             ----------------- --------------               -------------     ---------- ------
                                                          0.00         95600                           0              0      95

GENERAL ORTHOPEDICS PFD Ser D  371990961                  0.00         78000  X                        0              0      78
                                                          0.00         40000       X                   0              0      40
                                             ----------------- --------------               -------------     ---------- ------
                                                          0.00        118000                           0              0     118

GLOBALSTAR TELECOMM LTD $4.000 379364508             19,837.50           300  X                        0              0
GLOBALSTAR TELECOMM LTD $4.000 379364508             19,837.50           300  X                        0              0
PFD
                                                    694,312.50         10500       X                   0              0      10
                                             ----------------- --------------               -------------     ---------- ------
         SUBTOTALS FOR THIS PAGE                  3,444,487.00       1142241                       32000              0    1110
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     41
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                          As of 12/31/1999


 HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
PREFERRED (cont.)
- -----------------

                                             ----------------- --------------               -------------     ---------- ------
                                                    714,150.00         10800                           0              0      10

IBM CORP DEP SH REP 1/4 $1.875 459200309             25,500.00          1000  X                        0              0       1
PFD Ser A
                                                    609,450.00         23900       X                   0              0      23
                                             ----------------- --------------               -------------     ---------- ------
                                                    634,950.00         24900                           0              0      24

INTERNET COMMERCE SVCS CO CV   4605679A0            720,000.00        720000       X                   0              0     720
PFD Ser A

MARATHON TECHNOLOGIES CORP CV  565915998            605,000.00        121000       X                   0              0     121
PFD Ser A


MARATHON TECHNOLOGIES CORP CV  565915980             70,000.00          8750  X                        0              0       8
PFD Ser B
                                                    910,000.00        113750       X                   0              0     113
                                             ----------------- --------------               -------------     ---------- ------
                                                    980,000.00        122500                           0              0     122

MARATHON TECHNOLOGIES CORP CV  5659159A5            542,364.00         45197       X                   0              0      45
PFD Ser D

MEDIA ONE GROUP 7% PREM INC    58440J500            338,625.00          7000  X                        0              0       7
EXCHAN SEC $3.500 PFD
                                                    653,062.50         13500       X                   0              0      13
                                             ----------------- --------------               -------------     ---------- ------
                                                    991,687.50         20500                           0              0      20

MOTOROLA 6.68% CAPITAL TR PFD  620074203             97,812.50          5000  X                     2000              0       3
                                                    252,356.25         12900       X                   0              0      12
                                             ----------------- --------------               -------------     ---------- ------
                                                    350,168.75         17900                        2000              0      15
                                                    350,168.75         17900                        2000              0      15

NETWORKS ON-LINE INC CV PFD    641218912                  0.00          6376  X                        0              0       6
Ser B
                                                          0.00         48624       X                   0              0      48

                                             ----------------- --------------               -------------     ---------- ------
         SUBTOTALS FOR THIS PAGE                  4,824,170.25       1126997                        2000              0    1124
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     42
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                          As of 12/31/1999


HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                              INVEST
                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
PREFERRED (cont.)
- -----------------

                                             ----------------- --------------               -------------     ---------- ------
                                                          0.00         55000                           0              0      55

NOBLENET INC PFD Ser A         6550989A1            300,000.00        240000       X                   0              0     240

PACIFIC TELESIS FING II $2.125 694889205             49,000.00          2000  X                        0              0       2
PFD
                                                    352,800.00         14400       X                   0              0      14
                                             ----------------- --------------               -------------     ---------- ------
                                                    401,800.00         16400                           0              0      16

PRIZMA INC CONV PFD Ser B      7418099B5            102,000.00         34000       X                   0              0      34
PRIZMA INC CONV PFD Ser B      7418099B5            102,000.00         34000       X                   0              0      34

QUICKBUY INC CV PFD Ser B      7484499A5            776,925.00        103590       X                   0              0     103

RELIASTAR FING II $2.025 PFD   75952F205             41,750.00          2000  X                        0              0       2
                                                    688,875.00         33000       X                   0              0      33
                                             ----------------- --------------               -------------     ---------- ------
                                                    730,625.00         35000                           0              0      35

ROVING SOFTWARE INC CONV PFD   77938R9A5             10,010.00          9100  X                        0              0       9
Ser A
                                                    189,970.00        172700       X                   0              0     172
                                             ----------------- --------------               -------------     ---------- ------
                                                    199,980.00        181800                           0              0     181

RSP FINE CHEMICALS INC CV PFD  7496999A4             50,000.00         10000       X                   0              0      10
Ser A

SEALED AIR CORP CV $2.000 PFD  81211K209             19,900.00           400  X                        0              0
                                                    686,550.00         13800       X                   0              0      13
                                                    686,550.00         13800       X                   0              0      13
                                             ----------------- --------------               -------------     ---------- ------
                                                    706,450.00         14200                           0              0      14

SONAMED CORP PFD Ser A         8354099H8             28,768.00          4495  X                        0              0       4
                                                    499,168.00         77995       X                   0              0      77
                                             ----------------- --------------               -------------     ---------- ------
                                                    527,936.00         82490                           0              0      82

                                             ----------------- --------------               -------------     ---------- ------
         SUBTOTALS FOR THIS PAGE                  3,795,716.00        717480                           0              0     717
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     43
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                          As of 12/31/1999



HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
PREFERRED (cont.)
- -----------------

SPECTRA SCIENCE CORP CONV PFD  847619996            104,917.50         46630  X                        0              0      46
Ser A
                                                    867,667.50        385630       X                   0              0     385
                                             ----------------- --------------               -------------     ---------- ------
                                                    972,585.00        432260                           0              0     432

SURGICAL SEALANTS INC CV PFD   8688889A8            275,025.00          7334       X                   0              0       7
Ser A


SURGICAL SEALANTS INC CV PFD   8688889B6            480,000.00          7680       X                   0              0       7
Ser B

TRANSFUSION TECHNOLOGIES PFD   893658971            128,272.50         11402       X                   0              0      11
Ser E

TURNSTONE PUBLISHING GROUP INC 8998994A3            200,001.88          3299       X                   0              0       3
CONV PFD Ser A

UNIVERSAL LEARNING TECH INC CV 9134569A9            174,948.00        117120       X                   0              0     117
PFD Ser B

UNIVERSAL LEARNING TECH INC CV 9134569C5            119,695.30         30770  X                        0              0      30
PFD Ser C
                                                  1,042,971.24        268116       X                   0              0     268
                                             ----------------- --------------               -------------     ---------- ------
                                                  1,162,666.54        298886                           0              0     298

VIRTUAL INK PFD Ser C          928257A95             79,533.60         24000  X                        0              0      24
VIRTUAL INK PFD Ser C          928257A95             79,533.60         24000  X                        0              0      24
                                                    823,504.15        248500       X                   0              0     248
                                             ----------------- --------------               -------------     ---------- ------
                                                    903,037.75        272500                           0              0     272

WEB CT INC PFD Ser E           929920908            107,800.00         20000  X                        0              0      20
                                                    185,955.00         34500       X                   0              0      34
                                             ----------------- --------------               -------------     ---------- ------
                                                    293,755.00         54500                           0              0      54
                                             ----------------- --------------               -------------     ---------- ------
         SUBTOTALS FOR THIS PAGE                  4,590,291.67       1204981                           0              0    1204
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     44
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001


                                                          As of 12/31/1999


HOLDING COMPANY: (2) WELCH AND FORBES (Cont.)

                                                                              INVEST
                                                  MARKET                      INVEST AUTH   VOTING AUTH (SHARES)
NAME OF ISSUER                 CUSIP              VALUE            SH/PV      SOLE SHR MGR      SOLE            SHARED    NONE
- ------------------------------ ------------  ----------------- ------------   ---- --- ---- -----------       ---------- ------
<S>                            <C>           <C>               <C>            <C>  <C> <C>  <C>               <C>        <C>
PREFERRED (cont.)
- -----------------

                                             ================= ==============               =============     ========== ======
TOTALS FOR PREFERRED                             19,475,457.62       7333902                       34000              0    7299

                                             ================= ==============               =============     ========== ======
GRAND TOTALS                                     19,475,457.62       7333902                       34000              0    7299
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
REPORT RUN: 12/31/1999 at 08:07 AM                   EQUITIES DISCLOSURE (13-F)                                     PAGE     45
BUSINESS DATE: 12/31/1999                                                                                       R33.002.001

                                                         As of 12/31/1999


                                                    Produced on trust2*WELCHDB

                                    The parameters used in producing report R33.002.001 were:
                            <S>                                                                <C>
                            ASOF##                           =                                 12/31/1999
                            BK_LIST##                        =                                          2
                            DV_SUM#                          =                                        YES
                            BK_SUM#                          =                                         NO
                            MIN_SHARES#                      =                                     10,000
                            MIN_CORP_SHARES#                 =                                     10,000
                            MIN_MKT_VAL#                     =                                 200,000.00

                   ======================================== End of Report ========================================
</TABLE>

* greater than


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