Professor Aldo Leopold 
 
 
     Your memo on the state of the Hill Farm plantings after eleven years
is 
enlightening. 
 
     Inclosed you will find a reprint of a paper by G. G. Simpson, that I

think carries an important lesson. I have called the attention of bur 
Journalism people to this paper, and thought you might care to do the same

at Wisconsin. I wrote Pimpson for a number of reprints, so you may keep the

one I am sending you. 
 
                                     Sincerely yours, 
 
 
 
                                     Paul L. Errington 
                                     Research Associate Professor 
 
 
 
PLE:JH 
INC. 
 
 
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