282 APPENDIX C. 



Boston Soc. Nat. Hist., Vol. III., pp. 199-200. Boston, November. 

 1849- 



1849. 21 5- O n tne development of ova in insects. Proc. 

 Amer. Acad. Arts and Sc.. Vol. II., p. 181. Boston, November, 

 1849. 



1849. 216. Relation between the structure of animals and the 

 element in which they dwell. Proc. Anier. Acad. Arts and Sc., 

 Vol. II., p. 181. Boston, November, 1849. 



1849. 217. On the egg in vertebrate animals as a means of 

 classification. Proc. Amer. Acad. Arts and Sc., Vol. II., pp. 183- 

 184. Boston, December, 1849. 



1849. 218. On the circulation and digestion in the lower ani- 

 mals. Proc. Boston Soc. Nat. Hist., Vol. III., pp. 206-207. Boston, 

 December, 1849. 



1849. 219. Resemblance of the mastodon and the manatee. 

 l'ri>i. ttoston Soc. Nat. Hist., Vol. III., p. 209. Boston, December, 

 1849- 



1849. 220. On the respiratory system in the lower animals. 

 Proc. Boston Soc. Nat. Hist.. Vol. III., pp. 209-210. Boston. 

 December, 1849. 



1850. 221. Lake Superior: its physical character, vegetation, 

 and animals, compared with those of other and similar regions. 

 With a narrative of the tour by J. Elliot Cabot. Contributions 

 by other scientific gentlemen (John L. Leconte. A. A. Gould, 

 J. E. Cabot, T. W. Harris. A. Gray, Leo Lesquereux and Edward 

 Tuckerman). 8vo. Boston, 1850. 



1850. 222. Contributions to the natural history of the Acale- 

 phae of North America. Part I.: On the naked-eyed Medusae of 

 the shores of Massachusetts in the perfect state of development. 

 Part II. : On the Beroid Medusas of the shores of Massachusetts in 

 their perfect state of development. Mem. Amer. Acad. Arts and 

 Sc., New Series, Vol. IV., pp. 221-374. 16 plates. Boston, 1850. 

 Communicated to the Academy May 8 and May 29, 1849. Review of 

 Part I. in Amer. Joiirn. Sc., Vol. X., pp. 272-276, September, 1850. 



