AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 



DEVOTED TO THE NATURAL SCIENCES 



IN THEIR WIDEST SENSE. 



p,o«.eTcop E N ° 



N bT T s°kingsi.ey 





associate editors: 



rT^NUKKWS. 



Vol. XXVI. JUNE, 1892. 



No. 306 



CONTENTS. 





VOL Xry °FairfiM Osborn. 455 



Zoology.- The Cla»!tuati 





FlON "\ *!* ™ Alice Boding,,. 482 

 . M. D. 495 







^ND Pamphlets 502 



— Human Rumination. . 





: 

 - Member of the Chalicotheriodea ? 



tfews— General 5,,r> 



-.}-.— Quartz and Feld- 

 -The Basalts of Cassel 

 . ,- Diorite 

 -The Porphyry of Mont 



Embryology.-Oxomxh of 



Eni »■ .'.:-> '-- 









= ■ 



BINDER &> 



KELLY 



518 and 520 MINOR STREET 



