

Eleventh Year. 

 Vol. XXII. No. 566. 



DECEMBEE 8, 1893. 



Single Copies, Ten Cents. 

 I3. 50 Per Year, in Advance. 



CONTEN TS 



Some Geological Features of Jackson Park, 



Chicago. D. E. Willard 309 



Notes and News " 310 



The Atmospheres of the Moon, Planets and 



Sun. G. H. Bryan, M. A 3it 



On the Life Zones of the Organ Mountains and 



Adjacent Region in Southern New Mexico, 



with Notes on the Fauna of the Range. C. 



H. Tyler Townsend 313 



Pottery on Puget Sound. James Wickersham. 315 

 Disposal of Waste at the World's Columbian 



Exposition. W.F.Morse 316 



Bird Notes. Morris Gibbs 317 



Letters to the Editor: 



A Mistake in Teaching Botan3^ E, W. 

 Claypole 317 



Coral Reef Formation. Joseph Le Conte. . . 318 

 Book-Reviews 318 



I Scientific Instruments | 



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