Calendar of Societies. 



Philosophical society, Washington. 



Jan. 29. — F. W. Clarke, Present status of miner- 

 alogy ; K. T. Hill, The topography and geology of 

 the cross-timbers of Texas. 



Feb. 12. — H. A. Hazen, The sky-glows of 1883; 

 Bailey Willis, Bay's Mountains, Tennessee ; George 

 E. Curtis, Cowls and suction anemometers. 



Boston society of natural history. 

 Feb. 2. — J. S. Kingsley, Development of arthro- 

 pods and their relationship to worms. 



Scientific society, Purdue university. 

 Jan. 19. — W. A. Fankbauer, The January cold- 

 wave ; J. Troop, The food of the English sparrow ; 

 A. H. Stahl and C. K. Barus, Summaries of recent 

 work in mechanical engineering and botany. 



Publications received at Editor's Office, Jan. 24-29. 



Canfield, C. W., ed. The American annual of photography 

 and photographic times. New York, Scovill manuf. co. 295 

 p. 8°. 



Edwards, J. Differential calculus. New York, Macmillan. 



439 P- 16°. $2.75. 

 Kennedy, A. B. W. The mechanics of machinery. New York, 



Macmillan. 652 p. 16°. $3.50. 



Laurie, S. S. The rise and early constitution of universities, 



with a survey of mediaeval education. New York. Appleton. 



293 p. 12°. 

 Russell, I. C. Geological history of Lake Lahontan. (U. S. 



geol. surv., monogr. xi.) Washington, Government. 288 p. 



4°- 



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