PROCEEDINGS 



AMERICAN ACADEMY 



ARTS AND SCIENCES. 



VOL. XVII. 



PAPERS READ BEFORE THE ACADEMY. 



I. 



CONTRIBUTIONS FROM THE CHEMICAL LABORA- 

 TORY OF HARVARD COLLEGE. 



By Josiah Parsons Cooke, Director. 



Presented May 11, 1881. 



Introduction. 



eed- 

 n of 



MARINE BIOLOGICAL LABORATORY. 



Received ..jLr*^.^>^^.-. /, ./~" r.^fxl. 



Accession No. 6 "r+iT" 



Given by ^^ ..(7.'r.r^.^..^e^t Tyh^rp'-^l^-- 



Place, 



*»* No book OP pamphlet is to be pe moved from the liab- 

 OPatopy tuithout the pepmission ot the Trustees. 



re- 

 ;ctly 

 r as 

 hese 

 ents 



un- 



our 

 now 

 ided 



r in 



ucutai uuoci viiutfu, m cApiiiiiaLiun oi cercain precautions which we 



VOL. XVII. (n. S. IX.) 1 



