FIRST AMENDMENT TO PURCHASE AGREEMENT

         THIS FIRST AMENDMENT TO PURCHASE  AGREEMENT (this  "Amendment") is made
and entered into as of the 17th day of December,  1999, by and among  Ferrellgas
Partners, L.P., a Delaware limited partnership ("Purchaser"),  Ferrellgas, L.P.,
a Delaware  limited  partnership  ("Subsidiary  OLP"),  and Williams Natural Gas
Liquids, Inc., a Delaware corporation ("Seller").

                              W I T N E S S E T H:

         WHEREAS,  Purchaser,  Subsidiary  OLP and Seller have entered into that
certain  Purchase  Agreement  dated  as  of  November  7,  1999  (the  "Purchase
Agreement"); and

         WHEREAS,  Purchaser,  Subsidiary  OLP and  Seller  desire  to amend the
Purchase Agreement as set forth in this Amendment;

         WHEREAS,  pursuant to Section 9.3 of the Purchase  Agreement,  the
Purchase Agreement may be amended in writing by the parties
thereto;

         NOW,  THEREFORE,  in  consideration  of the premises and the respective
representations,  warranties,  covenants,  agreements and  conditions  contained
herein, the parties hereto agree as follows:







                                     ARTICLE




1 AMENDMENTS TO THE PURCHASE  AGREEMENT 1.1 SECTION Amendment to the Preamble to
the Purchase Agreement .

         The  Preamble to the Purchase  Agreement is hereby  amended by deleting
the parenthetical  "("Agreement")" in its entirety and inserting in lieu thereof
the parenthetical "(as amended, the "Agreement")".

1.1      SECTION Amendment to Article IV of the Purchase Agreement .

         Article IV of the Purchase  Agreement  is hereby  amended by adding the
following section:

         "SECTION 4.13     Audit.

                  At  Purchaser's  request,  Seller  has  engaged  Ernst & Young
         L.L.P. to perform an audit of the Company's  financial  records for the
         nine months ended  September 30, 1999, and for the years ended December
         31, 1998 and December 31, 1997, and prepare financial  statements whose
         format will comply with the requirements of the Securities and Exchange
         Commission.  Purchaser  agrees to pay the cost of the audit,  including
         audit fees and expenses,  up to $300,000;  provided,  however,  that if
         Purchaser  requests Ernst & Young L.L.P.  to deviate in any substantial
         manner  from the  scope of the  audit as set  forth in Annex A  hereto,
         Purchaser  shall bear any  incremental  costs,  even if the cost of the
         audit exceeds  $300,000.  The cost of such audit,  including audit fees
         and expenses but excluding any incremental costs of the audit resulting
         from any  deviation  in the  scope of the audit as set forth in Annex A
         hereto,  above $300,000 will be borne by Seller. In connection with the
         Company's  audit,  Seller agrees to use its reasonable  best efforts to
         execute a Management  Representation  Letter to be delivered to Ernst &
         Young L.L.P."

1.1      SECTION Amendment to Section 5.1(e) of the Purchase Agreement .

         Section 5.1(e) of the Purchase  Agreement is hereby amended by deleting
the number  "$120,230,000"  in the second  line  thereof and  inserting  in lieu
thereof the number "$118,426,550".

1.1      SECTION Amendment to Section 5.1(f) of the Purchase Agreement .

         Section 5.1(f) of the Purchase Agreement is hereby amended and restated
to read as follows:

                  "(f)  Purchaser  shall  have  received a  certificate  from an
         authorized  officer of Seller,  dated the Closing  Date,  to the effect
         that the conditions set forth in Sections 5.1(c), (d), (e) and (h) have
         been satisfied by Seller; and"

1.1      SECTION Amendment to Section 5.2(e) of the Purchase Agreement .

         Section 5.2(e) of the Purchase  Agreement shall be amended and restated
to read as follows:

                  "(e)  Seller  shall  have  received  a  certificate   from  an
         authorized  officer of the General  Partner with respect to  Purchaser,
         dated the Closing Date, to the effect that the  conditions set forth in
         Sections 5.2(c), (d), and (j) have been satisfied by Purchaser."

1.1      SECTION Amendment to Section 7.2(a)(ii) of the Purchase Agreement .

         Section  7.2(a)(ii)  of the  Purchase  Agreement  shall be amended  and
restated to read as follows:

                  "(ii) a breach of any  representation or warranty contained in
         Article II of this  Agreement  or in  Section 5 of the  Representations
         Agreement (the  "Representations  Agreement")  dated as of December 17,
         1999, by and among Seller,  Purchaser,  Subsidiary  OLP and the General
         Partner,"

1.1      SECTION Amendment to Section 7.2(a)(iii) of the Purchase Agreement .

         Section  7.2(a)(iii)  of the  Purchase  Agreement  shall be amended and
restated to read as follows:

                  "(iii)   a breach of any  agreement  or  covenant  of Seller
set forth in this  Agreement  or in the  Representations
         Agreement,"

1.1      SECTION Amendment to Section 7.2(a) of the Purchase Agreement .

         The last sentence in Section 7.2(a) of the Purchase  Agreement shall be
amended and restated to read as follows:

                  "Purchaser agrees that, except as provided in Section 7.5, the
         indemnification  provided in this Section 7.2 is the  exclusive  remedy
         for money  damages  for a breach by  Seller  of any  representation  or
         warranty  contained in Article II of this  Agreement or in Section 5 of
         the Representations  Agreement, any covenant contained in Article IV of
         this Agreement and Section 5 of the Representations  Agreement and with
         respect to any of the transactions contemplated in this Agreement or in
         the Representations Agreement."

1.1      SECTION Amendment to Section 7.2(b) of the Purchase Agreement .

         The  preamble  of Section  7.2(b) of the  Purchase  Agreement  shall be
amended and restated to read as follows:

                  "(b) Seller's  obligations to indemnify Purchaser  Indemnitees
         pursuant to clause  (ii) of Section  7.2(a)  hereof  with  respect to a
         breach of a representation or warranty  contained in this Agreement and
         in  the   Representations   Agreement  are  subject  to  the  following
         limitations:"

1.1      SECTION Amendment to Section 7.2(b)(i) of the Purchase Agreement .

         The first clause of Section  7.2(b)(i) of the Purchase  Agreement shall
be amended and restated to read as follows:

                  "(i)  Except with  respect to a breach of the  representations
         and  warranties  set forth in Sections  2.2, 2.4, 2.8, 2.12 and 2.20 of
         this Agreement,  Sections 5(d)(i),  5(d)(iv),  5(d)(v) and 5(d)(vii) of
         the Representations Agreement and any claim based on fraud."

1.1      SECTION Amendment to Section 7.3(a)(ii) of the Purchase Agreement .

         Section  7.3(a)(ii)  of the  Purchase  Agreement  shall be amended  and
restated to read as follows:

                  "(ii)    a breach of any  representation  or warranty
contained in Article III of this Agreement or Section 1 of the Representations
Agreement,"

1.1      SECTION Amendment to Section 7.3(a)(iv) of the Purchase Agreement .

         Section  7.3(a)(iv)  of the  Purchase  Agreement  shall be amended  and
restated to read as follows:

                  "(ii)    a breach of any agreement or covenant of Purchaser in
 this Agreement or in the Representations Agreement."

1.1      SECTION Amendment to Section 7.3(a) of the Purchase Agreement .

         The last sentence of Section 7.3(a) of the Purchase Agreement  shall be
 amended and restated to read as follows:

                  "Seller  agrees  that  the  indemnification  provided  in this
         Section 7.3 is the  exclusive  remedy for money damages for a breach by
         Purchaser,   the  Subsidiary   OLP  or  the  General   Partner  of  any
         representation  or warranty  contained in Article III of this Agreement
         and Section 1 of the Representations  Agreement, any covenant contained
         in Article IV of this  Agreement  and Section 3 of the  Representations
         Agreement  and with respect to any  transactions  contemplated  in this
         Agreement and in the Representations Agreement."

1.1      SECTION Amendment to the Preamble of Section 7.3(b) of the Purchase
Agreement .

         The  preamble  of Section  7.3(b) of the  Purchase  Agreement  shall be
amended and restated to read as follows:

                  "(b) Purchaser's  obligations to indemnify Seller  Indemnitees
         pursuant to clause  (ii) of Section  7.3(a)  hereof  with  respect to a
         breach of a representation  or warranty  contained in this Agreement or
         in  the   Representations   Agreement  are  subject  to  the  following
         limitations:"

1.1      SECTION Amendment to Section 7.3(b)(i) of the Purchase Agreement .

         The first clause of Section  7.3(b)(i) of the Purchase  Agreement shall
be amended and restated to read as follows:

                  "(i)  Except with  respect to a breach of the  representations
         and  warranties  set forth in Section 3.9 of this  Agreement,  Sections
         1(c),  1(j) and 1(m) of the  Representations  Agreement  and any  claim
         based on fraud,"

1.1      SECTION Amendment to Section 9.3 of the Purchase Agreement .

         The first  sentence of Section 9.3 of the Purchase  Agreement  shall be
amended and restated to read as follows:

                  "This Agreement and the Representations  Agreement dated as of
         the Closing  Date  constitute  the entire  agreement  among the parties
         hereto  pertaining to the subject matter hereof and supersede all prior
         agreements, understandings,  negotiations and discussions, whether oral
         or   written,   of  the   parties,   and  there   are  no   warranties,
         representations  or other  agreements  among the parties in  connection
         with the subject matter hereof except as set forth specifically  herein
         or contemplated by this Agreement or the Representations Agreement."

1.1      SECTION Amendment to Exhibit A to the Purchase Agreement .

         The first  bullet  point under the section of Exhibit A to the Purchase
Agreement  entitled  "Other  Features-  Material  Event"  shall be  amended  and
restated as follows:

         "o if the  closing  price  for  Common  Units  (on the New  York  Stock
         Exchange) is below $7.50,  as  appropriately  adjusted for unit splits,
         combinations, etc., for 10 consecutive trading days;"







                                     ARTICLE




                              1 GENERAL PROVISIONS
1.1      SECTION Full Force and Effect .

         Except as  expressly  amended  hereby,  the  Purchase  Agreement  shall
continue in full force and effect in accordance  with the provisions  thereof on
the date hereof.

1.1      SECTION Other Provisions .

         Article IX of the Purchase  Agreement shall apply to this Amendment and
be incorporated  herein with the same force and effect as if its provisions were
reprinted as part of this Amendment.









         EXECUTED as of the date first written above.






NYC:71920.3
WILLIAMS NATURAL GAS LIQUIDS, INC.


By:
Name:
Title:


FERRELLGAS PARTNERS, L.P.
By: Ferrellgas Inc., its general partner



By:
Name:
Title:


FERRELLGAS, L.P.
By: Ferrellgas, Inc., its general partner



By:
Name:
Title: