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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000947871-00-000165.txt : 20000216
<SEC-HEADER>0000947871-00-000165.hdr.sgml : 20000216
ACCESSION NUMBER:		0000947871-00-000165
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20000215
GROUP MEMBERS:		ARNHOLD & S BLEICHROEDER INC
GROUP MEMBERS:		ARNHOLD AND S. BLEICHROEDER ADVISERS, INC.
GROUP MEMBERS:		ARNHOLD AND S. BLEICHROEDER, INC.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SAN JUAN BASIN ROYALTY TRUST
		CENTRAL INDEX KEY:			0000319655
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL ROYALTY TRADERS [6792]
		IRS NUMBER:				756279898
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		
		SEC FILE NUMBER:	005-33873
		FILM NUMBER:		546660

	BUSINESS ADDRESS:	
		STREET 1:		BANK ONE TEXAS N A TRUST
		CITY:			FT WORTH
		STATE:			TX
		ZIP:			76113
		BUSINESS PHONE:		8178844630

	MAIL ADDRESS:	
		STREET 1:		1600 BANK ONE TOWER
		STREET 2:		500 THROCKMORTON
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76102-3899

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARNHOLD & S BLEICHROEDER INC
		CENTRAL INDEX KEY:			0000732816
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				134959915
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1345 AVENUE OF THE AMERICA
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10105
		BUSINESS PHONE:		2122084440

	MAIL ADDRESS:	
		STREET 1:		1345 AVENUE OF THE AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10105
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<DESCRIPTION>AMENDMENT NO. 4 TO SCHEDULE 13G
<TEXT>

                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549



                                  Schedule 13G


             Information Statement Pursuant to Rules 13d-1 and 13d-2
                    Under the Securities Exchange Act of 1934
                                (Amendment No. 4)




                          San Juan Basin Royalty Trust
                          ----------------------------
                                (Name of Issuer)



                                  Common Stock
                          ----------------------------
                         (Title and Class of Securities)


                                    798241105
                          ----------------------------
                                 (CUSIP Number)




Check the following box if a fee is being paid with statement ___. (A fee is
not required if the reporting person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).

- --------------------------------------------------------------------------------

         The information on the remainder of this 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).

<PAGE>


Cusip 798241105
                                       13G
- --------------------------------------------------------------------------------
1      NAME OF REPORTING PERSONS
       S.S. OR IRS IDENTIFICATION NO. OF ABOVE PERSONS

       Arnhold and S. Bleichroeder, Inc.
       Arnhold and S. Bleichroeder Advisers, Inc.
- --------------------------------------------------------------------------------
2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)  **__

                                                            (b) ___
- --------------------------------------------------------------------------------
3      SEC USE ONLY

- --------------------------------------------------------------------------------
4      CITIZENSHIP OR PLACE OF ORGANIZATION

       State of New York
- --------------------------------------------------------------------------------
                           5        SOLE VOTING POWER
NUMBER OF                           0
SHARES                 ---------------------------------------------------------
BENEFICIALLY               6        SHARED VOTING POWER
OWNED BY                            3,250,000
EACH                   ---------------------------------------------------------
REPORTING                  7        SOLE DISPOSITVE POWER
PERSON                              0
WITH                   ---------------------------------------------------------
                           8        SHARED DISPOSITIVE POWER
                                    3,250,000
- --------------------------------------------------------------------------------
9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       3,250,000
- --------------------------------------------------------------------------------
10     CHECK THE BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

       Not Applicable
- --------------------------------------------------------------------------------
11     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

       6.97%
- --------------------------------------------------------------------------------
12     TYPE OF REPORTING PERSON*

       BD, IA
- --------------------------------------------------------------------------------
       *SEE INSTRUCTIONS BEFORE FILING

<PAGE>


Cusip 798241105
Schedule 13 G (Cont.)

Item 1(a)-  Name of Issuer: San Juan Basin Royalty Trust

Item 1(b)-  Address of Issuer's Principal Executive Offices:
            1600 Bank One Tower
            500 Throckmorton
            Ft. Worth, TX 76102


Item 2(a)-  Name of Person Filing: Arnhold and S. Bleichroeder, Inc.
                                   Arnhold and S. Bleichroeder Advisers, Inc.

Item 2(b)-  Address of Principal Business Office:    1345 Ave. of the Americas
                                                     New York, NY 10105

Item 2(c)-  Citizenship: New York, NY, USA (Place of Incorporation)

Item 2(d)-  Title of Class of Securities:      Common Stock

Item 2(e)- Cusip Number: 798241105

Item 3   - This statement is being filed pursuant to Rule 13d-1(b). The person
           filing is a:
           (a) Broker or Dealer registered under Section 15 of the Act; and
           (e) Investment Adviser registered under Section 203 of the Investment
               Advisers Act of 1940.

Item 4(a) - 3,250,000

Item 4(b) - Percent of Class: 6.97%

Item 4(c)- Number of Shares to which A & SB has:
         (i)--sole power to vote or to direct the vote:                -0-
         (ii)-shared power to vote or to direct the vote:              3,250,000
         (iii)-sole power to dispose or to direct the disposition of:  -0-
         (iv)-shared power to dispose or to direct the disposition of: 3,250,000

Item 5   -  Ownership of Five Percent or Less of a Class: N/A

Item 6   -  Ownership of More than Five percent on Behalf of Another Person:


<PAGE>


Cusip 798241105
Schedule G (Cont.)

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:

                  Arnhold and S. Bleichroeder, Inc., Arnhold
                  and S. Bleichroeder Advisers, Inc.

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.


                                    SIGNATURE

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 14, 2000


         ARNHOLD AND S. BLEICHROEDER, INC.


         By:  ---------------------------------
              /S/ Tracy L. Saltwick
              Senior Vice President, Compliance

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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