OMB APPROVAL

OMB Number: 3235-0145
Expires:  October 31, 1994
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. 4)

OM Group, Inc.
(Name of Issuer)

Common Stock
(Title of Class of Securities)

- -----------------------------------------------------------------
670872100
(CUSIP Number)

*The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to
the subject class of securities, and for any subsequent amendment
containing information which would alter disclosures provided in
a prior cover page.

The information required on 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).

SEC 1746 (2-92


SCHEDULE 13G
Page 2 of 5 Pages
CUSIP No.  670872100

- -----------------------------------------------------------------
1	NAME OF REPORTING PERSON
	SS OR IRS IDENTIFICATION NO. OF ABOVE PERSON

	Jurika & Voyles, L.P.
	IRS No.:  04-3330073
- -----------------------------------------------------------------
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a)/  /
(b)/  /
- -----------------------------------------------------------------
3	SEC USE ONLY
- -----------------------------------------------------------------
4	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware
- -----------------------------------------------------------------
NUMBER OF 		5	SOLE VOTING POWER
SHARES				-0-
BENEFICIALLY		-------------------------------------------
OWNED BY		6	SHARED VOTING POWER
EACH				      1,008,323
REPORTING			-------------------------------------------
PERSON		7	SOLE DISPOSITIVE POWER
WITH					-0-
				-------------------------------------------
			8	SHARED DISPOSITIVE POWER
				      1,192,445
- -----------------------------------------------------------------
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
	PERSON
	1,192,445 shares
- -----------------------------------------------------------------
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
	EXCLUDES CERTAIN SHARES* /  /
- -----------------------------------------------------------------
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
5.20%
- -----------------------------------------------------------------
12	TYPE OF REPORTING PERSON*
	IA
- -----------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT


SCHEDULE 13G
Page 3 of 5 Pages
CUSIP No.  670872100

ITEM 1.

	(a)	The name of the issuer is OM Group, Inc.

	(b)	The principal executive office of OM Group, Inc. is 50
Public Square, 3800 Terminal Tower, Cleveland, Ohio  44113.

ITEM 2.

	(a)	The name of the person filing this statement is Jurika
& Voyles, L.P.

	(b)	The principal business office of Jurika & Voyles, L.P.
is located at 1999 Harrison Street, Suite 700, Oakland, CA
94612.

	(c)	Jurika & Voyles, L.P. is a Delaware limited
partnership.

	(d)	This statement relates to shares of common stock of OM
Group, Inc. ("the Stock").

	(e)	The CUSIP number of the stock is 670872100.

ITEM 3.  IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(B), OR
13D-2(B), CHECK WHETHER THE PERSON FILING IS A:

	(a)	/   /  Broker or Dealer registered under Section 15 of
the Act.

	(b)	/   /  Bank as defined in section 3(a)(6) of the Act.

	(c)	/   /  Insurance Company as defined in section
3(a)(19) of the Act.

	(d)	/   /  Investment Company registered under section 8
of the Investment Company Act.

	(e)	/ X /  Investment Adviser registered under section 203
of the Investment Advisers Act of 1940.

	(f)	/   /  Employee Benefit Plan, Pension Fund which is
subject to the provisions of the Employee Retirement Income


SCHEDULE 13G
Page 4 of 5 Pages
CUSIP No.  670872100

Security Act of 1974 or Endowment Fund; see section 240.13d-
1(b)(1)(ii)(F).

	(g)	/   /  Parent Holding Company , in accordance with
section 240.13d-1(b)(1)(ii)(F).

	(h)	/   /  Group, in accordance with section 240.13d-
1(b)(1)(ii)(H).

ITEM 4.  OWNERSHIP

	(a)	Jurika & Voyles, L.P. beneficially owns 1,192,445
shares of the Stock.

	(b)	Jurika & Voyles, L.P. beneficially owns 5.20% of the
Stock outstanding.

	(c)	(i)	Jurika & Voyles, L.P. has the sole power to vote
or to direct the vote of -0- shares of the Stock.

	(d)	(ii)	Jurika & Voyles, L.P. has the shared power to
vote or to direct the vote of 1,008,323 shares of the Stock.

	(e)	(iii)	Jurika & Voyles, L.P. has the sole power to
dispose or to direct the disposition of -0- shares of the Stock.

	(f)	(iv)	Jurika & Voyles, L.P. has the shared power to
dispose or to direct the disposition of 1,192,445 shares of the
Stock.

ITEM 5.  OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

If this statement is being filed to report the fact that as of
the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following  /   /.

Instruction:  Dissolution of a group requires a response to this
item.

ITEM 6.  OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
PERSO

SCHEDULE 13G
Page 5 of 5 Pages
CUSIP No.  670872100

Jurika & Voyles, L.P. is a registered investment adviser whose
clients have the right to receive or the power to direct the
receipt of dividends from, or the proceeds from the sale of the
Stock.  No individual client's holdings of the Stock are more
than 5 percent of the class.

ITEM 7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY
WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
HOLDING COMPANY

Not applicable.

ITEM 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE
GROUP

Not applicable.

ITEM 9.  NOTICE OF DISSOLUTION OF GROUP

Not Applicable.

ITEM 10.  CERTIFICATION

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 of such securities and were not acquired in
connection with or as a participant in any transaction having
such purposes or effect.

SIGNATURES

After reasonable inquiry and to the best of my knowledge, I
certify that the information set forth in this statement is true,
complete and correct.

DATED:  February 10, 2000

Jurika & Voyles, L.P.


By:  ______________________________

      Christopher L. Bittman, President & CEO