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PROCEEDINGS 



AMERICAN PHILOSOPHICAL SOCIETY, 

 HELD AT PHILADELPHIA, FOR PROMOTING USEFUL KNOWLEDGE. 



Vol. XXIII. January, 1886. No. 121. 



TABLE OF CONTENTS. 



PAGE. 



A Contribution to the Vertebrate Paleontology of Brazil. By 

 E. D. Cope (with plate) 1 



Some new Hypotriclious Infusoria. By Dr. Alfred G. Stokes (with 

 plate) 21 



Contributions from the Laboratory of the University of Pennsyl- 

 vania. No. XXIV. Contributions to Mineralogy. By Dr. F. 

 A. Genth 30 



On Polysynthesis and Incorporation as Characteristics of American 

 Languages. By Daniel G. Brinton, M.D 48 



Aus Bosnien unci der Hercegovina. By Dr. Friedrich S. Eravss. . 87 



Catalogue of the Species of Batrachians and Reptiles contained in 

 a collection made at Pebas, Upper Amazon, by John Hauxwell. 

 By E. D. Cope 94 



A Sketch of the Life of Robert E. Rogers, M.D., LL.D., with Bio- 

 graphical Notices of his Father and Brothers. By W. 8. W. 

 Ruschenberger , M.D 104 



Report on the Coal Deposits near Zacualtipan, in the State of 



Hidalgo, Mexico (icith two cuts). By E. D. Cope 146 



Stated Meeting, August 21, 1885 152 



Stated Meeting, September 18, 1885 153 



Stated Meeting, October 2, 1885 154 



Stated Meeting, October 16, 1885 157 



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Published for the American Philosophical Society, 



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