9 



SCIEN 



Eleventh Year. 

 Vol. XXI. No. SSI. 



JANUARY 27, 1893. 



Stngle Copies, Ten Cents. 

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Contents. 



The New Botany. Lester F. Ward 



The Structure op Insect Trachea, with 

 Special Reference to those op Zaitha 

 Fluminea. Alfred C. Stokes 



Current Notes on Anthropology.— XXI. D. 

 G. Brinton, Editor 



Notes from the Cornell Insectary. M. V. 

 Sliyigerland 



The Extreme Heat and Cold Endured by Man. 

 Marquis De Nadaillac 



Bezoars. Eliza Br ightiven 



The Study of Moulting in Birds. Witmer 

 Stone 



Letters to the Editor. 



Comparative Longevity. 5. V. Clevenger. . . 



Book Reviews. 



Handbook of Australian Fungi 



Select Extra-Tropical Plants 



A Test-Book of Least Squares 



Theory of Errors and Methods of Least 

 Squares 



Entered at the Post-Offlce of New York, N.Y., 

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The Naturalist on the 

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