PAUL B. SEARS, VICE-PRESIDENT         WILLIAM A. DREYER, SECRETARY 
 
 
             ECOLOGICAL SOCIETY OF AMERICA 
 
 
                                                   OFFICE OF THE SECRETARY

                                                   DEPARTMENT OF ZOOLOGY

                                                   UNIVERSITY OF CINCINNATI

                                                     CINCINNATI 21. OHIO

 
                                                   May 12, 1947 
 
 
 
 Professor Aldo Leopold 
 424 University Farm Pla'e 
 University of Wisconsin 
 Madison, Wisconsin 
 
 Dear Professor Leopold, 
      Since your letter of April 25 1 have been thinking about 
 the proposed program on bird and mammal populations. I am 
 sorry it will be impossible to have Dr. Elton and do not 
 question your judgment against a symposium under the cir- 
 cumstances. However, I do not give up easily and have an- 
 other suggestion to make. 
      Would it appeal to you to schedule a round-table discussion 
 of the subject? Inasmuch as you say that Dr. Errington has 
 published recently and probably would not have a paper to 
 present, he could serve as chairman and lead off with an in- 
 troduction and outline of the problem. Then you and Dr. 
 Rowan present papers. If we could get one other suitable 
 paperthat would be sufficient to open the rest of the session 
 for questions and discussion, some of which might be invited 
 and planned. 
 
      In,,connention with another paper, you once mentioned 
Irven B ss, Cyril Kabot and Robert McCabe? Can you enlist one 
of the ? Would Victor Shelford (Ecology 24:472-84, 1943) or 
Walter Taylor be able to present anything on mammals that 
would fit into your idea and serve as a further basis of 
discussion. 
     I believe the Naturalists and Society for Evolution would 
Join us as co-sponsors for such a program which would bring 
in a variety of opinion for discussion. 
 
     Please give this proposition your careful consideration 
and let me know your decision. 
     When time permits ! shall write again concerning the 
Finance Committee. There is no rush about it. 
 
                               Sincerely yours, 
 
 
                               Wili 9reyer 
 
 
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   .N ' 
 
 
ALDO LEOPOLD, PRESIDENT 
 
 
HENRY J. OOSTING, TREASURER