Coiitractioiies 



Titulorum üperum citatoruni in Bibl io gra phia. 



Am. J'. Sc. Ar. — American Journal of Science 8: Arts. New 

 Haven. 



Am. J'. Sc. Ag. — American Journal of Science & Agriculture. 

 Albany. 



Ann'. Lyc'. Nat. Hist, — Annais of Tlie Lyceum of Natural History 

 of New York. 



Bost. J'. Nat. Hist. — Boston Journal of Natural History. 



J'. Ac'. Nat. Sc' Philada. — Journal uf the Academy of Natural 

 Sciences of Philadelphia, S. 



J*. Ac'. Nat. Sc'. Philada. S. S. — Journal, &c. Second Series. 

 Philada. 4. 



M'. Am. Ac'. Ar. «H^ Sc. S. S. — Memoirs of the American Aca- 

 demy of Arts & Sciences, Second Series. Boston, 4. 



N. E. Far. — New England Farmci-, Boston. 



Pr'. Ac'. Nat. Sc'. Philada. — Proceedings of the Academy of Na- 

 tural Sciences of Philadelphia. 



IM'. Am. Ass. Adv. Sc. — Pioceedings of the American Associa- 

 tion for the Advancement of Science. — 



Pr'. Am. Pli. Sc. — Proceedings of tlie American PInlosophical 

 Society. 



Pr'. Bost. Sc'. Nat. Hist. — Proceedings Boston Society of Natural 

 History. 



Pr'. Lyc. Nat. Hisl. — l'ioceedings Lyceum of Natural History of 

 New York. 



Tr'. Am. Ph. Sc. S. S. — Transactione American Philosophical So- 

 ciety, Second Series. 

 XIII. 22 



