122 



THE AMERICAN MONTHLY 



[Apr 



Wanted. — Microscopic preparations illustrating- the his- 

 tology of petals and sepals. Would like to get a full set for 

 John H. Lowell, Waldoboro, Maine. 



Wanted. — Earth containg diatoms from Redondo Beach 

 for a European subscriber who offers cash, or, in exchange, 

 Hungarian diatomaceous material from St. Peter. C. W. S. 



Prize. — The Philadelphia Academy of Surgery offers a 

 $1,000 prize for a 150-page essay on some surgical subject 

 in pathology or practice. Open until October, 1901. Ad- 

 dress : 219 S. 13th., Street, Philadelphia, Pa. 





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