294 APPENDIX C. 



tributions to the Natural History of the United States of America," 

 p. 381. London, 1859. 



1860. 340. A communication in opposition to the theory of 

 origin of species of Mr. Darwin. Proc. Boston Soc. Nat. Hist., 

 Vol. VII., pp. 231-235. Boston, February, 1860. 



1860. 341. On consecutive fauns and their corresponding num- 

 ber of geological formations. Proc. Boston Soc. Nat. Hist., Vol. VI I ., 

 pp. 241-245, 250-252. Boston, March, 1860. 



1860. 342. Discussion on the theory of Prof. W. B. Rogers, 

 of subsidence and denudation of the ocean-floor. Proc. Boston Soc. 

 A r at. Hist., Vol. VII., pp. 271-275. Boston, April, 1860. 



1860. 343. On the Arctic Sea. Proc. Amer. Acad. Arts and 

 Sc., Vol. IV., pp. 422-423. Boston, April, 1860. 



1 860. 344. Homologies of the Radiata. Proc. Amer, Acad. Arts 

 and Sc., Vol. IV., p. 441. Boston, May, 1860. 



1860. 345. Individuality and specific differences among Aca- 

 lephs ; or, Professor Agassiz on the origin of species. Published 

 from advanced sheets of the third volume of the Contributions to the 

 Natural History of the United States. Amer. Journ. Sc., 2d series, 

 Vol. XXX., pp. 142-154. July, 1860. 



1860. 346. Varieties do not in reality exist as such. Proc. 

 Amer. Acad. Arts and Sc., Vol. V., p. 72. Boston, October, 1860. 



1860. 347. On the age of some of the sandstones of North 

 America. Proc. Boston Soc. Nat. Hist., Vol. VII., pp. 356-357. 

 Boston, 1860. 



1860. 348. On Afallotiis vittosiis of Labrador. Proc. Boston 

 Soc. Nat. Hist., Vol. VII., p. 399. Boston, November, 1860. 



1 86 1. 349. Report of the Director of the Museum of Compara- 

 tive Zoology, for the year 1859, presented to the Board of Trustees 

 in January, 1860. In Report of the Trustees of the Museum of 

 Comparative Zoology, 1861, pp. 33-37. Svo. Boston, 1861. 



1861. 350. Report of the Director of the Museum of Compara- 

 tive Zoology, for the year 1860. January 30, 1861. In Report of 



