j> 



OONTEISTTS. 



PAGE. 



List of Additions to the Library, v 



Art. I. — Mathematical Investigations in the Theory of 



Value and Prices. By Irving Fisher, 1 



II. — Studies in the English Mystery Plays. By 



Charles Davidson, __ 125 



III. — Papoid-digestion. By R. H. Chittenden, 298 



TV. — On the Classification and Geographical Distri- 

 bution of the Laminariaceje. By W. A. Setch- 



ELL, _ 333 



V. — Revision of the Families of Loop-bearing Brach- 



lOPODA. By C. E. Beecher. Plates 1, 2, 376 



VI. — The Development of Terebratula obsoleta, Dall. 



By C. E. Beecher. Plates 2, 3, 392 



Via. — Canadian Spiders. By J. H. Emerton. Plates 



la, 2a, 3a, 4, 400 



VII. — On Some Birds and Eggs collected by Mr. Geo. 

 Comer at Gough Island, Kkrguelen Island and 

 the Island of South Georgia, with extracts 

 from his notes, including a meteorological rec- 

 ord for about six months at gough island. by 



G. E. Verrill. Plates 8,9, 430 



VIII. — On the Anatomy of a species of Nemertean 

 (Cerebratuhis lacteus YerriW), with remarks on cer- 

 tain other species. By W. K. CoE. Plates 10-15, 479 

 IX. — Descriptions of three new species of New Eng- 

 land Pal^onemerteans. By W. R. Coe, 515 



X. — Supplement to the Marine Nemerteans and 



Planarians of New England. By A. E. Verrill, 523 



