LECTURES 



ON 



MOLLUSCA; 



OR 



SHELL-FISH" AND THEIE ALLIES. 



PREPARED FOR THE 



SMITHSONIAN INSTITUTION, 



BY 



PHILIP P. CARPENTER, B. A., PH. D., 



OP WARRINGTON, ENGLAND. 



WASHINGTON: 



PRINTED AT THE CONCESSIONAL GLOBE OFFICE. 

 18G1. 



