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Paleontologies! Bulletin, No. 36. 



FIRST ADDITION 



TO THE 



FAUNA OF THE PUERCO EOCENE. 



{Read before the American Philosophical Society, January 5, 1SSS.) 



ON THE 



BRAINS 



OP THE 



EOCENE MAMMALIA PHENACOOUS AND PERIPTYCHUS. 



{Read before the American Philosophical Society, December 15, 1882.) 



FOURTH CONTRIBUTION 



TO THE 



HISTORY OF THE PERMIAN FORMATION OF TEXAS. 



{Read before the American Philosophical Society, March 16, 1883.) 



By PROFESSOR E. D. COPE. 



For Sale by A. Z. Foote, 



1223 BELMONT AVENUE, PHILADELPHIA. 



