300 



specimen of Thalassidroma Leachii, Leach's Petrel, shot on 

 Chelsea Beach, had been purchased. The thanks of the 

 Society were voted for the above donations. 



The Curator of Herpetology announced the donation of 

 a live Tortoise from Cape Haytien, in the name of J. P. 

 Couthouy. 



A mole was presented in the name of Mr. S. R. M. Hol- 

 brook, of Milton, Mass. The thanks of the Society were 

 voted for the donation. - 



A bottle containing Insects, Spiders, &c. was presented 

 in the name of Dr. F. W. Cragin, of Surinam, a corres- 

 ponding member. 



Mr. Stodder exhibited to the Society water pipes of vari- 

 ous sizes, made of Gutta percha. 



Drs. W. W. Codman, Buckminster Brown, and Mr. 

 Thomas Ross were elected members of the Society. 



June 5, 1850. 



The President in the Chair. 



The President introduced to the Society Rev. Zadock 

 Thompson, of Burlington, Vt., who had been invited to 

 deliver the annual Address. 



Mr. Thompson proceeded to address the Society upon a subject 

 for which he was peculiarly fitted, namely, the Natural History 

 of Vermont. He gave a sketch of the most prominent physical 

 features and the geological characteristics of the State, showing 

 how they influenced the distribution of plants and animals. He 

 stated numerous interesting facts in relation to the fishes and 

 mammalia of Vermont. He gave an account of what had been 

 done by the State government for the encouragement of science, 

 by authorizing State reports on the various departments of Nat- 

 ural History. He spoke of the many difficulties by which the 



