$4.00 per Year. 



$4.60 per Year (Foreign). 

 THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 



DEVOTED TO THE NATURAL SCIENCES 



IN THEIR WIDEST SENSE. 



JANUARY, 1896. 



CONTENTS. 



0^™^^™™^^^ 



1 



lograptus— The Upper 



Lost Characteristics. . . . Alphett Hyatt 



9 



Botany— The Vienna Propositions — The 





17 







I :eeent Botanical Papers 55 



Vision in the Vertebrates. (Illustrated.) 







/. R. Slonaker. 







Editor's TABLE._TheAiitivivi.<ectioni.<tsauain 







■■ ..... \, ,-..-.■ 







Association at San Francisco 



32 



-:•■ :-..■ . .-■-■■;.- .• -•. a 









. . 



sa 



luence of 



Kecent Books and Pamphlets 



J Muaenm 















* " the v i | , -![, rnblende Granite 





Emhy< . ology. . 76 















Geology and Palont h, m ,.-< > n the Sj ecies of 





i v , .. ■ ■ . ; .. ■; ,. 



in^iirt^ai. 





PHILADELPHIA, U. S. A. 



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