UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1)*
ENVIROGEN, INC.
COMMON STOCK
CUSIP Number: 294040100
December 31,
1998
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is field:
? Rule 13d-1(b)
? Rule 13d-1(c)
? Rule 13d-1(d)
*The remainder of this cover page shall be filled out for a reporting
person's initial filing on his form with respect to the subject class
of securities, and for any subsequent amendment containing information
which would alter the disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the
Securities Exchange Act of 1934 ("act") or otherwise subject to the
liabilities of that section of the Act but shall be subject to all
other provisions of the Act (however, see the Notes)
CUSIP NO. 294040100 13G
Page 2 of 4
1. NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
The Killen Group, Inc.
IRS #23-2213851
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) ?
(b) ?
3. SEC USE ONLY
4. CITIZENSHIP OR PLACE OF ORGANIZATION
Incorporated in the Commonwealth of Pennsylvania
NUMBER OF 5. SOLE VOTING POWER
20,000
SHARES
BENEFICIALLY 6. SHARE VOTING POWER
OWNED BY
EACH 7. SOLE DISPOSITIVE POWER 20,000
REPORTING
PERSON 8. SHARED DISPOSITIVE POWER
WITH:
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
20,000
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.05%
12. TYPE OF REPORTING PERSON*
I
CUSIP NO. 294040100 13G
Page 3 of 4
Item 1.
(a) The issue is ENVIROGEN, INC.
(b) The issuer's principal offices are located at Princeton
Research Center, 4100 Quakerbridge Road, Lawrenceville, NJ 08648.
Item 2.
The Killen Group, Inc.
(a) The Killen Group, Inc. is a person filing this report.
(b) The Killen Group's address is 1189 Lancaster Avenue, Berwyn, Pa
19312.
(c) The Killen Group is a corporation incorporated under the laws
of the Commonwealth of
Pennsylvania.
(d) This filing pertains to the common stock of the Issuer.
(e) The CUSIP number for the common stock is 294040100.
Item 3.
The Killen group, Inc. is an Investment Adviser registered under
section 203 of the Investment Adviser Act of 1940.
Item 4.
Not applicable.
Item 5.
This statement is being filed to report the fact that The Killen
Group, inc. has ceased to be a beneficial owner of more than five
percent of the sales of securities reported.
Item 6.
Not applicable.
Item 7.
Not applicable.
CUSIP NO. 294040100 13G
Page 4 of 4
Item 8.
Not applicable.
Item 9.
Not applicable.
Item 10.
By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above, were acquired in the
ordinary course of business and were not acquired for the purpose of
and do not have the effect of changing or influencing the control of
the issuer or such securities and were not acquired in connection with
or as a participant in any transaction having such purposes or effect.
After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is
true, complete and correct.
Date: February
11, 1999
The Killen Group,
Inc.
Robert E. Killen
Robert E. Killen,
Chairman & CEO
