MCZ ERNST MAYR LIBRARY 



3 2044 



18 660 505 



This book should be returned to 

 the Library on or before the last date 

 stamped below. 



A fine of flve cents a day is incurred 

 by retaining it beyond the specified 

 time. 



Please return promptly. 



Hf-Tfi 



*wmmtf 



