TRANSACTIONS 



OF THE 



AMERICAN PHILOSOPHICAL SOCIETY, 



HELD AT PRILADELPHIA, 



FOR PROMOTING USEFUL KNOWLEDGE. 

 VOL. XV.-NEW SERIES. 



PART 11. 



PAGE. 



Article Y. — Supplement to the Extiwt Batrachia and Reptilia of North America. By 



Edward D. Cope, A.M. 261 



Article VI. — An Analysis of the Life-Form in Art. By Harrison Allen, M.D. - - 279 



PUBLISHED BY THE SOCIETY, 



AND Foil 8ALK UY 



HENRY C. LEA, PHILADELPHIA; 

 N. TRiiBN-ER & CO., 57 & 59 LUDGATE HILL, LONDON. 



PUINTKD BY M'cAV.IjA & STAVKI.Y. 



