Calendar of Societies. 



ANNALS OF MATHEMATICS. Edited by Ormond Stone 

 and William M. Thornton. Office of Publication : University 

 of Virginia. Vol. 2, No. 2, is just out. 



Philosophical society, Washington. 



March 27. — I. C. Eussell, On the subaerial decay 

 of rocks, and the origin of the red color of certain 

 formations ; E. Hitchcock, Recent improvements in 

 microscopic objectives, with demonstration of the 

 resolving power of a l-16th inch : H. Farquhar, A 

 phonetic alphabet. 



Publications received at Editor's Office, March 22-27. 



Birds, the code of nomenclature and check-list of North 

 American, adopted by the American ornithologists' union. New 

 York, Amer. omithol. union, 1886. 8-1-392 p. 8°. 



Cain, W. Sanitary engineering. 3d ed. (N. C. board of 

 health.) Raleigh. State, 1885. 90 p., iUustr 8°. 



Crookshank, E. M. On the cultivation of bacteria. London, 

 W. Clowes, pr., [1886.J 7 p., [3] pi. 8°. 



Giobons, R. The physics and metaphysics of money ; with a 

 sketch of events relating to money in the early history of Cali- 

 fornia. New York, Putnam, 1886. 34 p. i2°. 



Jaques, W. H. Torpedoes for national defence. New 

 York, Putnam, 1886. 49 p., illustr. 12°. 



Merriman, M. Key to the text-book on the mechanics of 

 materials. New York, Wiley, 1886. 16 p. 8°. 50 cents. 



Michigan, Agricultural college of. Bulletin No. 11. Making 

 a lawn. Mixed lawngrass seeds analyzed. Lansing, State, [1886.] 

 10 p. 8°. 



Neukomm, M. Die epidemische diphtheric 1m canton Zurich 

 und deren beziehungen zum luftrohrenschnitt. Leipzig, Vogel, 

 1886. 127 p., 4 pi., map. 4 . 



Powell, J. W. Fifth annual report of the U. S. geological 

 survey l 1883-84. Washington, Government, 1885. 36-I-4C9 p., 

 58 pi., iUustr. 4 . 



Prudden, T. M. On Koch's methods of studying the bacteria, 

 with special reference to the bacteria causing Asiatic cholera. 

 Hartford, Conn. State board of health, 1885. [18J p. 8°. 



Smith, E. F. The influence of sewerage and water-supply on 

 the death-rate in cities. Lansing, Mich., State, [1886. ] 84 p., 4 

 pi. 8°. 



Ulrich, E. O. Report of the lower Silurian bryozoa of Minne- 

 sota, with preliminary descriptions of some new species. St. Paul, 

 State, 1886. 57 p. 8°. 



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