14 DAY USE 



RETURN TO DESK FROM WHICH BORROWED 



Biology Lnlbjrairy 



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



on the date to which renewed. 

 Renewed books are subject to immediate recall. 



NOV 1 9 1963 



-r fit 



FEB 2 8 1969 





3 SG9 



M -3 271969 



APR1 M" 



LD 2 



(D64lfslO)476 



General Library 



University of California 



Berkeley 



