14 DAY USE 



RETURN TO DESK FROM WHICH BORROWED! 



BIOLOGY LIBRARY 



TEL. NO. 642-2531 



This book is due on the last date stamped below, or 



on the date to which renewed. 

 Renewed books are subject to immediate recall. 



LD 21A-15m-2/69 

 (J6057slO)476 ^A-32 



General Library 



University of California 



Berkeley 



