181 



Mint, Feb. 22, 1856, acknowledging the receipt of notice of 

 his election as a member of the Society : — 



From the Imperial Society of Naturalists of Moscow, dated 

 17-29 February, 1856, in answer to a letter from this Society 

 of Oct. 19, 1855, on the subject of the celebration of the fiftieth 

 anniversary of the Society of Naturalists : and — 



From G. C. Swallow, State Geologist of Missouri, dated 

 Columbia, Mo., Feb. 27, 1856, accompanying a donation for 

 the library. 



The following donations were announced: — 



FOR THE LIBRARY. 



Journal of the Franklin Institute. Third Series. Vol. XXXI. No. 3. 

 March, 1856. Philadelphia. 8vo. — Frorn the Institute. 



Proceedings of the Boston Society of Natural History. Vol. V. No. 

 19. Feb. 1856. Boston. 8vo.— From the Society. 



Report of the Secretary of the Treasury, transmitting a Report from 

 the Register of ihe Treasury, of the Commerce and Navigation 

 of the United States, for the year ending June 30, 1855. Wash- 

 ington. 8vo. — From the Hon. J. R. Tyson. 



Mortality Statistics of the Seventh Census of the United States, 1850: 

 with comparative and illustrative tables. By J. B. De Bow, Su- 

 perintendent U. S. Census. Washington. 8vo. — From the same. 



The First and Second Annual Reports of the Geological Survey of 

 Missouri. By G. C. Swallow, State Geologist. Jefferson City, 

 1855. 8vo. — From the Author. 



The Practicabih'ty of constructing Cannon of great calibre, capable of 

 long continued use under full charges. By Daniel Treadvvell, 

 V. P. Am. Acad. &c. Cambridge, 1856. 8vo. — From the Au- 

 thor. 



The Astronomical Journal. Vol. IV. No. 19. March 19, 1856. 

 Cambridge. 4to. — Fro7n Dr. B. A. Gould, jr. Editor. 



The Rev. Dr. Rogers referred to a former communication 

 made by him on an improvement in the construction of the 

 ordinary carpenters' square. He now exhibited a model of 

 the instrument, and illustrated its use by diagram. 



Dr. Emerson, in reference to the peculiar severity of the 

 present winter, remarked upon the character of the first great 

 snow-storm of the season, which consisted of snow of a dry 



