HANCOCK JOHN BOND TRUST/
DEF 14A, 1998-10-05
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                                  SCHEDULE 14A
                                (Rule 14a -101)

                    INFORMATION REQUIRED IN PROXY STATEMENT

                              FILE NUMBER 811-3006

                            SCHEDULE 14A INFORMATION

          Proxy Statement Pursuant to Section 14(a) of the Securities
                    Exchange Act of 1934 (Amendment No. ___)

Filed by the Registrant                      [X]
Filed by a Party other than the Registrant   [ ]

Check the appropriate box:

[ ]  Preliminary Proxy Statement             [ ]  Confidential. For Use of the
[x]  Definitive Proxy Statement                   Commission Only (as permitted
[ ]  Definitive Additional Materials              by Rule 14a-6(e)(2))
[ ]  Soliciting Material Pursuant to
     Rule 14a-11(c) or Rule 14a-12

                            JOHN HANCOCK BOND TRUST
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified in Its Charter)

                            JOHN HANCOCK BOND TRUST
- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[X]  No fee required.

<PAGE>


- --------------------------------------------------------------------------------
                             Important Information
- --------------------------------------------------------------------------------

Dear Fellow Shareholder:

I am  writing  to ask for  your  vote on an  important  matter  concerning  your
investment in the John Hancock High Yield Bond Fund.

Many of the High Yield Bond Fund's current investment restrictions, which were
adopted at the Fund's inception in October 1987, reflect regulatory conditions
that are no longer in effect. Many of these restrictions were formerly required
by state securities commissions, but the requirements were eliminated by the
National Securities Markets Improvement Act of 1996. The Securities and Exchange
Commission ("SEC") has changed its position on others.

After careful consideration, your Fund's Trustees have unanimously agreed that
modernizing the High Yield Bond Fund's fundamental investment restrictions will
benefit all shareholders by providing a clearer and more concise set of
restrictions that reflects the current legal and investment environment. The
proposed changes are detailed in the enclosed proxy statement, and the rationale
for these changes is summarized in the questions and answers on the following
pages. I suggest you read both thoroughly before voting.

No Change in Investment Strategy 
It is important to note that the adoption of these simplified investment
restrictions will in no way alter the John Hancock High Yield Bond Fund's
objective of maximizing current income without assuming undue risk. Also, while
the range of available investment opportunities and techniques may expand as a
result of these amendments, the portfolio management team currently has no
intention of changing its investment approach.

Your  Vote  Makes a  Difference! 
No matter what the size of your investment may be, your vote is critical. I urge
you to review the enclosed materials and to complete, sign and return the
enclosed proxy ballot to us immediately. Your prompt response will help avoid
the need for additional mailings at your Fund's expense. For your convenience,
we have provided a postage-paid envelope. 

If you have any questions or need additional information, please contact your
investment professional or call your Customer Service Representative at
1-800-225-5291, Monday through Friday between 8:00 a.m. and 8:00 p.m. Eastern
Time. I thank you for your prompt vote on this matter.

                                               Sincerely,

                                               /s/ Edward J. Boudreau, Jr.
                                               Edward J. Boudreau, Jr.
                                               Chairman and CEO

<PAGE>
- --------------------------------------------------------------------------------
                             Important Information
- --------------------------------------------------------------------------------

Q&A

Q: What is the purpose of the proposed changes?

A: Many of your  Fund's  current  investment  restrictions  reflect  regulatory
conditions  that are no longer in  effect.  The  proposed  changes  to your Fund
include  eliminating  these obsolete  restrictions  on issues such as oil or gas
exploration  investments.  The  proposal  also  calls  for  amending  investment
restrictions  to  reflect  the  Securities  and  Exchange  Commission's  current
position on issues such as underwriting, loans and diversification requirements.
In addition,  the proposal seeks to re-designate certain fundamental  investment
restrictions  as  non-fundamental.  These  include  prohibiting  the purchase of
securities  on margin and  investing in companies  for the purpose of exercising
control.  Adopting these changes should not affect the way your Fund is managed,
but will give it a set of  investment  restrictions  that  reflects  the current
legal and investment environment.

Q: What is a "fundamental" investment restriction?

A: To protect the rights of  shareholders,  federal laws require that investment
companies  adopt  fundamental  restrictions  with  respect to  certain  types of
investments  and  practices   pertaining  to  a  fund's   investment   strategy.
Fundamental investment  restrictions can only be changed by a share-holder vote.
Non-fundamental  restrictions  further define a mutual fund's  policies and risk
profile, but can be altered by a fund's board of trustees.  Your Fund will still
have all the fundamental investment  restrictions required by federal law if the
proposed changes are adopted.

Q: Why are some of these restrictions outdated?

A: Formerly, state authorities had the ability to regulate the investment
practices of investment companies and often required the adoption of fundamental
restrictions  not required by federal law. These state mandates,  however,  were
not consistently  applied,  changed  repeatedly and did not always relate to the
underlying  objectives  and  policies  of  investment  companies.  Consequently,
state-level   authority  was  eliminated  by  the  National  Securities  Markets
Improvement  Act of 1996. Many of your Fund's  restrictions  still reflect these
obsolete regulations.

<PAGE>

Q&A continued

Q: What are the benefits of the proposed changes?

A: Modernizing  the  investment  restrictions  will give  your Fund  additional
flexibility  to  respond  to  new  opportunities  in  the  evolving   high-yield
marketplace   that  match  your  Fund's   investment   objective  and  approach.
Simplifying your Fund's investment  restrictions will also provide a clearer and
more concise picture of the characteristics and risks associated with your Fund.

Q: How do I vote?

A: Most shareholders typically vote by completing, signing and returning the
enclosed proxy card using the postage-paid envelope provided. If you prefer to
vote in person, you are cordially invited to attend a meeting of shareholders of
your Fund, which will be held at 9:00 a.m. on December 9, 1998 at our 101
Huntington Avenue headquarters in Boston, Massachusetts. If you vote now, you
will help avoid additional solicitations at your Fund's expense.

<PAGE>

                       JOHN HANCOCK HIGH YIELD BOND FUND
                      (a series of John Hancock Bond Trust)
                              101 Huntington Avenue
                                Boston, MA 02199

                  NOTICE OF A SPECIAL MEETING OF SHAREHOLDERS
                          TO BE HELD DECEMBER 9, 1998


This is the formal  agenda for your fund's  special  meeting.  It tells you what
matters will be voted on and the time and place of the meeting, in case you want
to attend in person.

To the shareholders of John Hancock High Yield Bond Fund:

A special  meeting of  shareholders  of your fund will be held at 101 Huntington
Avenue,  Boston,  Massachusetts  on  Wednesday,  December  9, 1998 at 9:00 a.m.,
Eastern Time, to consider the following:

1(a)-(n). A proposal to amend the fund's investment restrictions.  Your board of
trustees recommends that you vote FOR this proposal.

2.        Any other business that may properly come before the meeting.

Shareholders  of record as of the close of  business on  September  16, 1998 are
entitled to vote at the meeting and any related follow-up meetings.

Whether or not you expect to attend the meeting,  please complete and return the
enclosed proxy card. Please take a few minutes to vote now.

                       By order of the board of trustees,
                       Susan S. Newton
                       Secretary



October 5, 1998

<PAGE>

                               PROXY STATEMENT OF
                       JOHN HANCOCK HIGH YIELD BOND FUND
                     (a series of John Hancock Bond Trust)

This proxy  statement  contains the information you should know before voting on
the proposals as summarized below.

   
High  Yield  Bond  Fund  will  send a free  copy  of its  Annual  Report  to any
shareholder  upon  request.  If you want to obtain a copy of the fund's  report,
please write to the fund at 101 Huntington Avenue, Boston,  Massachusetts 02199,
or call John Hancock Funds at 1-800-225-5291.
    

                                  INTRODUCTION

This  proxy  statement  is being used by the board of  trustees  of your fund to
solicit  proxies to be voted at a special  meeting of shareholders of your fund.
This meeting will be held at 101 Huntington  Avenue,  Boston,  Massachusetts  on
Wednesday,  December  9, 1998 at 9:00 a.m.,  Eastern  Time.  The  purpose of the
meeting is to consider:

1(a)-(n).A proposal to amend the fund's investment restrictions.

2.       Any other business that may properly come before the meeting.

This  proxy  statement  and the  proxy  card are  being  mailed  to your  fund's
shareholders on or about October 5, 1998.

Who is Eligible to Vote?

Shareholders  of record on September 16, 1998 are entitled to attend and vote on
each proposal at the meeting or any adjourned meeting. Each share is entitled to
one vote. Shares represented by properly executed proxies, unless revoked before
or at the meeting, will be voted according to shareholders' instructions. If you
sign a proxy but do not fill in a vote, your shares will be voted to approve the
proposals.  If any other business comes before the meeting,  your shares will be
voted at the discretion of the persons named as proxies.

                                       1
<PAGE>

                          PROPOSALS 1(a) through 1(n)

                            AMENDMENT TO THE FUND'S
                            INVESTMENT RESTRICTIONS
   
John Hancock Advisers, Inc. (the "adviser") and your board of trustees recommend
that  the  following  changes  be  made to  modernize  your  fund's  fundamental
investment   restrictions.   They   recommend   eliminating   several   obsolete
restrictions as well as amending and  redesignating as  non-fundamental a number
of other restrictions. The purpose of this proposal is to provide your fund with
a set of investment  restrictions  that reflect the current legal and investment
environment. We are asking you to vote on these changes because the restrictions
are fundamental and can be changed only with shareholder approval.

The  Investment  Company Act of 1940 (the "1940 Act")  requires  mutual funds to
adopt fundamental  investment  restrictions covering certain types of investment
practices.  However,  your  fund is also  subject  to a  number  of  fundamental
restrictions  that are not required by the 1940 Act or any other  current  laws.
These  restrictions  were  adopted  in the past to reflect  certain  regulatory,
business or industry  conditions  that are no longer in effect,  especially  the
"blue sky" laws formerly  imposed by state  securities  regulations.  It is also
recommended  that some of the  fundamental  restrictions  be  liberalized to the
extent permitted under the 1940 Act in light of current  interpretive  positions
of the staff of the Securities and Exchange Commission.
    

The adviser  expects that you will benefit  from these  proposed  changes to the
fund's  fundamental  investment  restrictions in several ways.  First,  the high
yield bond segment of the fixed income  security  marketplace  continues to grow
and evolve.  Innovative  new products,  variations on existing  products and new
investment  techniques are constantly being  introduced.  The adviser  carefully
evaluates all new  investment  opportunities  to determine  whether any would be
suitable for the fund given its investment objective, policies and risk profile.
The  adviser  believes  that the  proposed  changes  to the  fund's  fundamental
restrictions  will provide the fund with additional  flexibility to respond more
quickly to new developments and changing trends in the marketplace  whenever the
adviser determines that a response is both appropriate and prudent.

   
Second, the proposed changes to the fund's investment  restrictions are designed
to  produce  a clearer  and more  concise  set of  restrictions.  These  revised
restrictions parallel the investment  restrictions of other funds managed by the
adviser,  which will facilitate the adviser's  compliance  efforts.  Also, these
revised  restrictions  should help investors  understand the characteristics and
risks associated with this fund and allow for more effective comparison to other
mutual funds with similar investment objectives.
    

                                       2
<PAGE>

Third,  the proposed changes to the fund's  fundamental  restrictions may expand
the range of investment  opportunities  and  techniques  available to manage the
fund's  portfolio.  However,  the fund has no current  intention of changing its
actual investment strategies as a result of these amendments.  In addition,  the
fund's investment  objective of maximizing current income without assuming undue
risk remains the same.

                 Proposed Amendments to Investment Restrictions

The table below sets forth the fund's current  fundamental  restrictions  in the
left hand column and the proposed amended restrictions in the right hand column.
The current  restrictions  are presented in the same order as they are listed in
the fund's statement of additional  information.  The amended  restrictions,  if
approved,  will be  reordered  in the fund's  revised  statement  of  additional
information.

- --------------------------------------------------------------------------------
Current Fundamental                      Amended Fundamental
Restriction                              Restriction
- --------------------------------------------------------------------------------
Proposal 1(a)                            Amended as follows: The fund may
Fundamental Restriction #1. The          not borrow money, except: (i) for
Fund may not borrow money in an          temporary or short-term purposes or
amount in excess of 331/3% of its        for the clearance of transactions
total assets, and then only as a         in amounts not to exceed 331/3% of
temporary measure for extraordi-         the value of the fund's total
nary or emergency purposes (except       assets (including the amount
that it may enter into a reverse         borrowed) taken at market value;
repurchase agreement within the          (ii) in connection with the
limits described in the Prospectus       redemption of fund shares or to
or this Statement of Additional          finance failed settlements of
Information), or pledge, mortgage        portfolio trades without
or hypothecate an amount of its          immediately liquidating portfolio
assets (taken at market value) in        securities or other assets; (iii)
excess of 15% of its total assets,       in order to fulfill commitments or
in each case taken at the lower of       plans to purchase additional
cost or market value. For the            securities pending the anticipated
purpose of this restriction,             sale of other portfolio securities
collateral arrangements with             or assets; (iv) in connection with
respect to options, futures con-         entering into reverse repurchase
tracts, options on futures               agreements and dollar rolls, but
contracts and collateral                 only if after each such borrowing
arrangements with respect to             there is asset coverage of at least
initial and variation margins are        300% as defined in the 1940 Act;
not considered a pledge of assets.       and (v) as otherwise permitted
                                         under the 1940 Act. For purposes of
                                         this investment restriction, the
                                         deferral of trustees' fees and
                                         transactions in short sales,
                                         futures contracts, options on
                                         futures contracts, securities or
                                         indices and forward commitment
                                         transactions shall not constitute
                                         borrowing.
                                                      * * * * 
                   
                                         Explanation: The amended
                                         restriction does not change the
                                         maximum amount of money which the
                                         fund may borrow but makes more
                                         explicit certain exceptions to the
                                         general prohibition against
                                         borrowing. The amended restriction
                                         also affords the fund additional
                                         flexibility to borrow money for
                                         other than extraordinary or
                                         emergency purposes if the adviser
                                         determines such borrowing is in the
                                         best interests of the fund and is
                                         consistent both with the fund's
                                         investment objective and with the
                                         requirements of the 1940 Act.
- --------------------------------------------------------------------------------
                                        3
                                       
<PAGE>

- --------------------------------------------------------------------------------
Current Fundamental                      Amended Fundamental
Restriction                              Restriction
- --------------------------------------------------------------------------------
1(a) (cont'd)                                       * * * *
                                         The second part of the existing    
                                         restriction relating to the        
                                         pledging, mortgaging or            
                                         hypothecating of the fund's assets 
                                         has been eliminated. This              
                                         restriction was imposed on the fund    
                                         by state securities regulations        
                                         that no longer apply to the fund.
- --------------------------------------------------------------------------------
Proposal 1(b)                            Amended as follows: The fund may
Fundamental Restriction #2. The          not act as an underwriter, except
Fund may not underwrite securities       to the extent that in connection  
issued by other persons except           with the disposition of portfolio 
insofar as the Fund may technically      securities, the Fund may be deemed
be deemed an underwriter under the       to be an underwriter for purposes 
Securities Act of 1933 in selling a      of the Securities Act of 1933.    
portfolio security.                                 * * * *
                                         Explanation: The 1940 Act prohibits
                                         the fund from underwriting         
                                         securities of other issuers. The   
                                         amended restriction is             
                                         substantively identical to the         
                                         current restriction, but is            
                                         rewritten to conform the               
                                         restriction to the language of the     
                                         other John Hancock funds'              
                                         restrictions.                          
- --------------------------------------------------------------------------------
Proposal 1(c)                            Amended and restated as two
Fundamental Restriction #3. The          restrictions as follows: The fund  
Fund may not purchase or retain          may not purchase, sell or invest in
real estate (including limited           real estate, but subject to its    
partnership interests but excluding      other investment policies and      
securities of companies, such as         restrictions may invest in
real estate investment trusts,           securities of companies that deal
which deal in real estate or             in real estate or are engaged in   
interests therein and securities         the real estate business. These
secured by real estate), or mineral      companies include real estate
leases, commodities or commodity         investment trusts and securities
contracts (except contracts for the      secured by real estate or interests
future delivery of fixed income          in real estate. The fund may hold
securities, stock index and              and sell real estate acquired
currency futures and options on          through default, liquidation or
such futures) in the ordinary            other distributions of an interest
course of its business. The Fund         in real estate as a result of the
reserves the freedom of action to        fund's ownership of securities.
hold and to sell real estate or          The fund may not invest in
mineral leases, commodities or           commodities or commodity futures
commodity contracts acquired as a        contracts, except for transactions
result of the ownership of               in financial derivative contracts,
securities.                              such as forwardcurrency contracts;
                                         financial futures contracts and        
                                         options financial futures              
                                         contracts; options on securities,      
                                         currencies and financial indices;      
                                         and swaps, caps, floors, collars       
                                         and swaptions.
                         
                                                    * * * *
                                             
                                         Explanation: The existing          
                                         restriction contains two unrelated 
                                         restrictions. These restrictions   
                                         have been separated into two       
                                         amended restrictions for improved  
                                         clarity. The two amended               
                                         restrictions are substantively         
                                         identical to the existing              
                                         restriction.                           
- --------------------------------------------------------------------------------
                                        4
                                             
<PAGE>
- --------------------------------------------------------------------------------
Current Fundamental                   Amended Fundamental                    
Restriction                           Restriction             
- --------------------------------------------------------------------------------
   
Proposal 1(d)                         Eliminated (not required by the 1940 Act).
Fundamental Restriction #4. The              
Fund may not invest in direct                       * * * *
participation interests in oil, gas   Explanation: This restriction was
or other mineral exploration or       imposed on the fund by state              
development programs.                 securities regulations that no
                                      longer apply to the fund. The fund        
                                      does not currently plan to invest         
                                      in direct participation interests         
                                      in oil, gas or other mineral              
                                      exploration or development programs       
                                      as part of its investment strategy. 
          
- --------------------------------------------------------------------------------
Proposal 1(e)                         Amended as follows: The fund may   
Fundamental Restriction #5. The       not make loans, except that the    
Fund may not make loans to other      fund may (1) lend portfolio        
persons except by the purchase of     securities in accordance with the        
obligations in which the Fund is      fund's investment policies up to
authorized to invest and by           331/3% of the fund's total assets
entering into repurchase              taken at market value, (2) enter
agreements; provided that the Fund    into repurchase agreements, and (3)
may lend its portfolio securities     purchase all or a portion of an
not in excess of 30% of its total     issue of publicly distributed debt
assets (taken at market value). Not   securities, bank loan participation
more than 10% of the Fund's total     interests, bank certificates of
assets (taken at market value) will   deposit, bankers acceptances,
be subject to repurchase agreements   debentures or other securities,    
maturing in more than seven days.     whether or not the purchase is made
For these purposes the purchase of    upon the original issuance of the
all or a portion of an issue of       securities.
debt securities shall not be                                                    
considered the making of a loan.                    * * * *
                                      Explanation: The first part of the       
                                      existing restriction is not               
                                      substantively changed, but has been       
                                      rewritten to conform to a more            
                                      modern phrasing of lending                
                                      restrictions.                             
                                      The second part of the existing          
                                      restriction is not required under         
                                      the 1940 Act and has been                 
                                      eliminated. The fund's board has          
                                      adopted a non-fundamental                 
                                      restriction which limits the fund's       
                                      investments in illiquid securities        
                                      to 15% of its net assets.                 
- --------------------------------------------------------------------------------
                                       5
<PAGE>
- --------------------------------------------------------------------------------
Current Fundamental                   Amended Fundamental
Restriction                           Restriction
- --------------------------------------------------------------------------------
Proposal 1(f)                         Amended as follows: With respect to
Fundamental Restriction #6. The       75% of the fund's total assets, the
Fund may not purchase the             fund may not invest more than 5% of
securities of any issuer if such      the fund's total assets in the
purchase, at the time thereof,        securities of any single issuer or
would cause more than 5% of its       own more than 10% of the
total assets (taken at market         outstanding voting securities of
value) to be invested in the          any one issuer, in each case other
securities of such issuer, other      than (i) securities issued or
than securities issued or             guaranteed by the U.S. Government,
guaranteed by the United States or    its agencies or its
any state or political subdivision    instrumentalities or (ii)
thereof, or any political             securities of other investment
subdivision of any such state, or     companies.
any agency or instrumentality of                                                
the United States, any state or                * * * *
political subdivision thereof, or                                              
any political subdivision of any      Explanation: The amended
such state. In applying these         diversification restriction will
limitations, a guarantee of a         apply to 75% instead of 100% of the
security will not be considered a     fund's total assets. The 100%
security of the guarantor, provided   limitation is not required by the
that the value of all securities      1940 Act. This change will allow
issued or guaranteed by that          the fund to invest up to 25% of its
guarantor, and owned by the Fund,     total assets in the securities of
does not exceed 10% of the Fund's     any one issuer, which will provide
total assets. In determining the      the fund with additional
issuer of a security, each state      flexibility to invest more
and each political subdivision,       significantly in certain issuers
agency and instrumentality of each    when the adviser determines that an
state and each multi-state agency     investment presents a special
of which such state is a member is    opportunity for the fund. This
a separate issuer. Where securities   change would also increase the
are backed only by assets and         risks of investing in the fund
revenues of a particular              because the fund would become more
instrumentality, facility or          susceptible to events that effect
subdivision, such entity is           individual issuers.
considered the issuer.                                                          
- --------------------------------------------------------------------------------
Proposal 1(g)                         Reclassified as a non-fundamental  
Fundamental Restriction #7. The       restriction (not required to be    
Fund may not invest in companies      fundamental by the 1940 Act).      
for the purpose of exercising                    * * * *
control or management.                                                          
                                      Explanation: The board has adopted       
                                      a non-fundamental policy to               
                                      prohibit the fund from investing in
                                      companies for the purpose of       
                                      exercising control or management of
                                      any company.                              
- --------------------------------------------------------------------------------
                                       6

<PAGE>
- --------------------------------------------------------------------------------
Current Fundamental                   Amended Fundamental
Restriction                           Restriction                 
- --------------------------------------------------------------------------------
Proposal 1(h)                         Eliminated (not required by the 1940 Act).
Fundamental Restriction #8. The                  * * * *
Fund may not purchase or retain in                                              
its portfolio any securities issued   Explanation: This restriction was
by an issuer any of whose officers,   imposed by state securities
directors, trustees or security       regulations that no longer apply to
holders is an officer or Trustee of   the fund. This restriction is not
such Fund, or is a member, partner,   necessary because principal        
officer or Director of the Adviser,   transactions (the direct purchase  
if after the purchase of the          or sale of securities for a
securities of such issuer by the      person's own account) with
Fund one or more of such persons      affiliated persons (persons who
owns beneficially more than 1/2 of    have an existing relationship with
1% of the shares or securities, or    the fund, such as any employee,
both, all taken at market value, of   officer or trustee of the fund) are
such issuer, and such persons         already restricted by the 1940 Act.
owning more than 1/2 of 1% of such                                              
shares or securities together own                                               
beneficially more than 5% of such                                               
shares or securities, or both, all                                              
taken at market value.                                                          
- --------------------------------------------------------------------------------
Proposal 1(i)                         Amended and reclassified as a
Fundamental Restriction #9. The       non-fundamental restriction (not
Fund may not purchase any             required to be fundamental by the
securities or evidences of interest   1940 Act).
therein on margin, except that the                                              
Fund may obtain such short-term                  * * * *
credit as may be necessary for the                                              
clearance of purchases and sales of   Explanation: The board has adopted 
securities, and the Fund may make     a non-fundamental restriction      
deposits on margin in connection      prohibiting the fund from                
with futures contracts and related    purchasing securities on margin.
options.                              The non-fundamental restriction is
                                      substantively identical to the            
                                      existing fundamental restriction.         
                                             
- --------------------------------------------------------------------------------
Proposal 1(j)                         Eliminated (not required by the 1940 Act).
Fundamental Restriction #10. The                                                
Fund may not sell any security                   * * * *
which the Fund does not own unless                                              
by virtue of its ownership of other   Explanation: Elimination of this
securities it has at the time of      restriction means that the fund may
sale a right to obtain securities     engage in short sales to the extent
without payment of further            permitted by the 1940 Act. The fund
consideration equivalent in kind      does not engage in short sales as
and amount to the securities sold     part of its investment strategy and
and provided that if such right is    has no current intention to do so.
conditional the sale is made upon     
equivalent conditions.             
- --------------------------------------------------------------------------------
                                        7
<PAGE>
- --------------------------------------------------------------------------------
Current Fundamental                   Amended Fundamental
Restriction                           Restriction                  
- --------------------------------------------------------------------------------
Proposal 1(k)                         Eliminated (not required by the 1940 Act).
Fundamental Restriction #11. The                 * * * *
Fund may not knowingly invest in                                                
securities which are subject to       Explanation: As noted in Proposal
legal or contractual restrictions     1(e) above, the fund's board has
on resale or for which there is no    adopted a non-fundamental
readily available market (e.g.,       restriction limiting the fund's    
trading in the security is            investments in illiquid securities 
suspended or market makers do not     to 15% of its net assets.                
exist or will not entertain bids or                                             
offers), except for repurchase                                                  
agreements, if, as a result thereof                                             
more than 10% of the Fund's total                                               
assets (taken at market value)                                                  
would be so invested.                                                           
- --------------------------------------------------------------------------------
Proposal 1(l)                         Amended as follows: The fund may   
Fundamental Restriction #12. The      not issue senior securities, except
Fund may not issue any senior         to the extent permitted by the 1940
security (as that term is defined     Act.                               
in the [1940 Act]) if such issuance   
is specifically prohibited by the                * * * *
[1940 Act] or the rules and                                                     
regulations promulgated thereunder.   Explanation: This restriction has
For the purpose of this               been amended for improved clarity,
restriction, collateral               but has not been substantively
arrangements with respect to          changed.
options, futures contracts and                                                  
options on futures contracts and   
collateral arrangements with       
respect to initial and variation                                                
margins are not deemed to be the                                                
issuance of a senior security.                                                  
- --------------------------------------------------------------------------------
                                       8
<PAGE>
- --------------------------------------------------------------------------------
Current Fundamental                   Amended Fundamental
Restriction                           Restriction                
- --------------------------------------------------------------------------------
Proposal 1(m)                         Amended as follows: The fund may
Fundamental Restriction #13. The      not purchase the securities of
Fund may not invest more than 25%     issuers conducting their principal 
of its total assets (taken at         activity in the same industry if,  
market value) in the securities of    immediately after such purchase,
issuers engaged in any one            the value of its investments in
industry, except that the Fund may    such industry would equal or exceed
invest up to 40% of the value of      25% of its total assets taken at
its total assets in the securities    market value at the time of such
of issuers engaged in the electric    purchase, except that (i) the fund
utility and telephone industries.     may invest up to 40% of the value
The Adviser follows a policy of not   of its total assets in the
causing the Fund to invest more       securities of issuers engaged in
than 25% of its total assets.         the electric utility and telephone
Obligations issued or guaranteed by   industries and (ii) this limitation
the U.S. Government or its agencies   does not apply to investments in
and instrumentalities are not         obligations of the U.S. Government
subject to the foregoing 25%          or any of its agencies or
limitation. The Adviser follows a     instrumentalities. The fund may not
policy of not causing the Fund to     concentrate its investments in the
invest more than 25% of its total     securities of issuers engaged in
assets in the securities of issuers   the electric utility industry or
engaged in the electric utility       the telephone industry unless
industry or the telephone industry    yields available for four
unless yields available for four      consecutive weeks in the four
consecutive weeks in the four         highest rating categories on new
highest rating categories on new      issue bonds in either industry
issue bonds in this industry (issue   (issue size of $50 million or more)
size of $50 million or more) have     have averaged greater than the
averaged greater than the yields of   yields of new issue long-term
new issue long-term industrial        industrial bonds similarly rated
bonds similarily rated (issue size    (issue size of $50 million or more)
of $50 million or more) and, in the   and, in the opinion the adviser,
opinion of the Adviser, the           the relative return available from
relative return available from the    the electric utility or telephone
electric utility or telephone         industry and the relative risk,
industry and the relative risk,       market-ability, quality and
marketability, quality and            availability of securities of this
availability of securities of this    industry justify such an
industry justifies such an            investment.
investment. Obligations issued or                                               
guaranteed by the U.S. Government                * * * *
or its agencies and                                                             
instrumentalities are not subject     Explanation: The 1940 Act requires
to the foregoing 25% limitation. In   that the fund adopt a fundamental
addition, for purposes of this        restriction with respect to
limitation, determinations of what    concentrating its investments in
constitutes an industry are made in   particular industries. However, the
accordance with specific industry     1940 Act does not require that the
codes set forth in the Standard       concentration restriction reference
Industrial Classification Manual      how industry classifications are
and without considering groups of     determined, and that part of the
industries (e.g., all utilities),     restriction has been eliminated.
to be an industry.                                                              
- --------------------------------------------------------------------------------
                                       9
<PAGE>
- --------------------------------------------------------------------------------
Current Fundamental                   Amended Fundamental
Restriction                           Restriction                
- --------------------------------------------------------------------------------
   
Proposal 1(n)                         Amended and incorporated into
Fundamental Restriction #14. The      Proposal 1(f).
Fund may not purchase securities of                                             
any issuer (others than securities               * * * *
issued or guaranteed by the U.S.                                                
Government or its agencies or         Explanation: This restriction has
instrumentalities) if such            been incorporated into the
purchase, at the time thereof,        diversification policy listed in
would cause the Fund to hold more     Proposal 1(f) above. The amended   
than 10% of any class of securities   restriction remains substantively  
of such issuer. For this purpose,     identical except it will apply to
all indebtedness of an issuer shall   75% instead of 100% of the fund's
be deemed a single class and all      total assets.
preferred stock of an issuer shall                                              
be deemed a single class.
                                                           
- --------------------------------------------------------------------------------
                                       10
<PAGE>

                      BOARD EVALUATION AND RECOMMENDATION

The trustees  believe that the proposed  amendments  to the fund's  restrictions
will more  clearly  reflect  current  regulatory  practice  and will  expand the
investment  opportunities  available  to the  fund.  Accordingly,  the  trustees
recommend  that you  approve  the  proposal  to change  the  fund's  fundamental
investment restrictions as described above.

If the  required  approval of a change to a  restriction  is not  obtained,  the
current investment restriction will continue in effect.

The trustees of your fund recommend that the  shareholders of your fund vote for
the proposal to amend the fund's investment restrictions.

                        VOTING RIGHTS AND REQUIRED VOTE
Each  share of your fund is  entitled  to one vote.  Approval  of each  proposal
requires  the  affirmative  vote  of a  majority  of the  shares  of  your  fund
outstanding  and  entitled  to  vote.  For  this  purpose,  a  majority  of  the
outstanding  shares of your fund means with respect to each proposal the vote of
the lesser of:

(1)      67% or more of the shares present at the meeting, if the holders of
         more than 50% of the shares of the fund are present or represented by
         proxy, or

(2)      more than 50% of the outstanding shares of the fund.

   
Shares of your fund represented in person or by proxy, including those that
abstain on a proposal, will be counted for purposes of determining whether there
is a quorum at the meeting. Accordingly, an abstention from voting has the same
effect as a vote against a proposal.
    

However, if a broker or nominee holding shares in "street name" indicates on the
proxy card that it does not have discretionary  authority to vote on a proposal,
those  shares  will  not be  considered  present  and  entitled  to vote on that
proposal.  Thus, a "broker  non-vote" has no effect on the voting in determining
whether a proposal has been adopted in accordance with clause (1) above, if more
than 50% of the  outstanding  shares  (excluding  the  "broker  non-votes")  are
present or represented.  However, for purposes of determining whether a proposal
has been adopted in accordance  with clause (2) above,  a "broker  non-vote" has
the same effect as a vote against that proposal because shares  represented by a
"broker non-vote" are considered to be outstanding shares.

                                       11
<PAGE>

                       INFORMATION CONCERNING THE MEETING

Solicitation of Proxies
   
In addition to the mailing of these proxy materials, proxies may be solicited by
telephone,  by fax or in person by the trustees,  officers and employees of your
fund;  by personnel  of the  adviser,  the fund's  principal  distributor,  John
Hancock Funds, and the fund's transfer agent, John Hancock  Signature  Services,
Inc., or by broker-dealer firms. Signature Services, together with a third-party
solicitation firm, has agreed to provide proxy  solicitation  services at a cost
of approximately $13,000, which will be paid by the fund.
    

The mailing address of the fund, the adviser and John Hancock Funds, Inc. is 101
Huntington Avenue, Boston, Massachusetts 02199.

Revoking Proxies

A  shareholder  signing and  returning a proxy has the power to revoke it at any
time before it is exercised:

      o  By filing a written notice of revocation with your fund's transfer
         agent, John Hancock Signature Services, Inc., 1 John Hancock Way, Suite
         1000, Boston, Massachusetts 02217-1000,


      o  By returning a duly executed proxy with a later date before the time
         of the meeting, or


      o  If a shareholder has executed a proxy but is present at the meeting
         and wishes to vote in person, by notifying the secretary of the fund
         (without complying with any formalities) at any time before it is
         voted.

Being present at the meeting alone does not revoke a previously executed and
returned proxy.

Outstanding Shares and Quorum
   
As of September 16, 1998, 34,131,057 Class A shares,  104,831,753 Class B shares
and  1,388,201  Class  C  shares  of  beneficial   interest  of  the  fund  were
outstanding. Only shareholders of record on September 16, 1998 (record date) are
entitled to notice of and to vote at the meeting.  A majority of the outstanding
shares of the fund that are entitled to vote will be considered a quorum for the
transaction of business.
    

Other Business

The fund's board of trustees knows of no business to be presented for
consideration at the meeting other than the proposal. If other business is
properly brought before the meeting, proxies will be voted according to the best
judgment of the persons named as proxies.

                                       12

<PAGE>

Adjournments

If a quorum is not  present in person or by proxy at the time any session of the
meeting is called to order,  the persons named as proxies may vote those proxies
that have been  received to adjourn the meeting to a later date.  If a quorum is
present but there are not sufficient votes in favor of the proposal, the persons
named as proxies may propose one or more  adjournments  of the meeting to permit
further  solicitation of proxies  concerning the proposal.  Any adjournment will
require the  affirmative  vote of a majority of the fund's shares at the session
of the meeting to be  adjourned.  If an  adjournment  of the meeting is proposed
because there are not  sufficient  votes in favor of the  proposal,  the persons
named as proxies  will vote those  proxies  favoring  the  proposal  in favor of
adjournment,   and  will  vote  those  proxies  against  the  proposal   against
adjournment.

Telephone Voting
   
In addition to  soliciting  proxies by mail,  by fax or in person,  the fund may
also arrange to have votes  recorded by  telephone by officers and  employees of
the fund or by personnel of the adviser or transfer agent.  The telephone voting
procedure is designed to verify a shareholder's identity, to allow a shareholder
to  authorize  the  voting  of  shares  in  accordance  with  the  shareholder's
instructions  and to confirm  that the voting  instructions  have been  properly
recorded. If these procedures were subject to a successful legal challenge,  the
telephone  votes would not be counted at the meeting.  The fund has not obtained
an opinion of counsel about telephone voting,  but is currently not aware of any
challenge.
    

     o   A shareholder will be called on a recorded line at the telephone
         number in the fund's account records and will be asked to provide the
         shareholder's social security number or other identifying information.

     o   The shareholder will then be given an opportunity to authorize
         proxies to vote his or her shares at the meeting in accordance with the
         shareholder's instructions.

     o   To ensure that the shareholder's instructions have been recorded
         correctly, the shareholder will also receive a confirmation of the
         voting instructions by mail.

     o   A toll-free number will be available in case the voting information
         contained in the confirmation is incorrect.

     o   If the shareholder decides after voting by telephone to attend the
         meeting, the shareholder can revoke the proxy at that time and vote the
         shares at the meeting.

                                       13
<PAGE>

                        OWNERSHIP OF SHARES IN THE FUND
   
As of  September  16,  1998,  Merrill  Lynch,  Pierce,  Fenner & Smith,  Inc. of
Jacksonville,  Florida, broker-dealers, held of record 10.34% of the outstanding
Class A  shares,  27.10% of the  outstanding  Class B shares  and  23.04% of the
outstanding Class C shares, which it held on behalf of its customers who are the
beneficial  owners of these  shares.  To the  knowledge  of the  fund,  no other
persons owned of record or beneficially  5% or more of the outstanding  Class A,
Class B or Class C shares of your fund.

As of  September  16,  1998,  the trustees and officers of the fund owned in the
aggregate less than 1% of the outstanding shares of the fund.
    

                                       14

<PAGE>
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<PAGE>
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<PAGE>



                     =======================================

                                    Thank You

                                   for mailing
                                 your proxy card
                                    promptly!

                     =======================================

[LOGO] JOHN HANCOCK FUNDS
       A Global Investment Management Firm

John Hancock Funds, Inc., Member NASD
101 Huntington Avenue, Boston, MA  02199-7603
1-800-225-5291    1-800-554-6713 (TDD)
John Hancock(R)                                                       570PX 9/98

<PAGE>                                                                          
                        
[LOGO] JOHN HANCOCK FUNDS          
       A Global Investment Management Firm

                          VOTE THIS PROXY CARD TODAY!
                    YOUR PROMPT RESPONSE WILL SAVE YOUR FUND
                       THE EXPENSE OF ADDITIONAL MAILINGS

   
Specify your desired action by check marks in the appropriate space(s). This
proxy will be voted as specified. If no specification is made, the proxy will be
voted in favor of each item. The persons named as proxies have discretionary    
authority which they intend to exercise in favor of the proposals referred to   
and according to their best judgment as to any other matters which properly come
before the meeting.                                                             
You may either check one box to direct the voting of your shares for all items
together or you may specify the voting ofyour shares for these items
individually, whichever method you prefer.

              \/ Please detach at perlocation before mailing. \/
<TABLE>                                                                         
<CAPTION>
                          <S>                                      <C>           <C>             <C>    <C> 
To specify your desired action for all items together:           FOR ALL     AGAINST ALL     ABSTAIN ALL
ITEMS 1(a)-(n): To amend the fund's investment restrictions.       [ ]           [ ]             [ ]   1.

To specify your desired action for each item individually:         FOR         AGAINST         ABSTAIN
ITEM 1(a): To amend the fund's investment                          [ ]           [ ]             [ ]   1(a).
           restriction on borrowing money.
                           
ITEM 1(b): To amend the fund's investment                          [ ]           [ ]             [ ]   1(b).
           restriction on underwriting securities.
               
ITEM 1(c): To amend the fund's investment                          [ ]           [ ]             [ ]   1(c).
           restriction on purchasing real estate and
           commodities.
    
ITEM 1(d): To eliminate the fund's                                 [ ]           [ ]             [ ]   1(d).
           investment restriction on direct investments
           in oil, gas or other mineral exploration
           ventures.

ITEM 1(e): To amend the fund's investment                          [ ]           [ ]             [ ]   1(e).
           restriction on making loans.
                              
ITEM 1(f): To amend the fund's investment                          [ ]           [ ]             [ ]   1(f).
           restriction on portfolio diversification.
                 
ITEM 1(g): To eliminate the fund's                                 [ ]           [ ]             [ ]   1(g).
           fundamental investment restriction on
           investing for the purpose of exercising
           control and reclassify the restriction as
           non-fundamental.

ITEM 1(h): To eliminate the fund's                                 [ ]           [ ]             [ ]   1(h).
           investment restriction on investing in
           affiliated companies.
     
ITEM 1(i): To eliminate the fund's                                 [ ]           [ ]             [ ]   1(i).
           fundamental investment restriction on
           purchasing securities on margin and
           reclassify the restriction as
           non-fundamental.

ITEM 1(j): To eliminate the fund's                                 [ ]           [ ]             [ ]   1(j).
           investment restriction on short sales.
                        
ITEM 1(k): To eliminate the fund's                                 [ ]           [ ]             [ ]   1(k).
           investment restriction on investing in
           restricted securities.
    
ITEM 1(l): To amend the fund's investment                          [ ]           [ ]             [ ]   1(l).
           restriction on issuing senior securities.
                  
ITEM 1(m): To amend the fund's investment                          [ ]           [ ]             [ ]   1(m).
           restriction on concentration.
                              
ITEM 1(n): To amend the fund's investment                          [ ]           [ ]             [ ]   1(n).
           restriction on diversification with respect
           to investments in any one issuer.

</TABLE>
    

<PAGE>

[LOGO] JOHN HANCOCK FUNDS          
       A Global Investment Management Firm

                          VOTE THIS PROXY CARD TODAY!
                    YOUR PROMPT RESPONSE WILL SAVE YOUR FUND
                       THE EXPENSE OF ADDITIONAL MAILINGS

                                                                                
               \/ Please detach at perlocation before mailing. \/

   
JOHN HANCOCK HIGH YIELD BOND FUND                        THIS PROXY IS SOLICITED
A SERIES OF JOHN HANCOCK BOND TRUST                     BY THE BOARD OF TRUSTEES
            

         The undersigned holder of shares of beneficial interest of John Hancock
High Yield Bond Fund hereby  constitutes and appoints Anne C. Hodsdon,  James B.
Little and Susan S. Newton,  and each of them singly,  proxies and  attorneys of
the undersigned, with full power of substitution to each, for and in the name of
the  undersigned,  to vote and act upon all  matters at the  special  meeting of
shareholders  of the  fund to be  held on  Wednesday,  December  9,  1998 at the
offices of the fund, 101 Huntington Avenue, Boston, Massachusetts, at 9:00 a.m.,
eastern time, and at any and all adjournments thereof, relating to all shares of
the fund held by the  undersigned  or relating to all shares of the fund held by
the undersigned  which the undersigned would be entitled to vote or act with all
the powers the  undersigned  would  possess if personally  present.  All proxies
previously given by the undersigned relating to the meeting are hereby revoked.
    

                  Date ______________________________________________ , 1998
                  
                  o        Please complete,  sign, date and return this proxy in
                           the enclosed envelope as soon as possible.

                  o        Please sign exactly as your name or names appear in
                           the box on the left. When signing as attorney,
                           executor, administrator, trustee or guardian, please
                           give your full title as such.

                  o        If a corporation, please sign in full corporate
                           name by president or other authorized officer.

                  o        If a partnership, please sign in partnership name
                           by authorized person.

                  
                  __________________________________________________________




                  __________________________________________________________
                  Signature(s)                                 

                  


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