C0ltim6ia Unifoersitg Biological Series. 



EDITED BY 

 HENRY FAIRFIELD OSBORN. 



1. FROM THE GREEKS TO DARWIN. 



By Henry Fairfield Osborn, Sc.D. Princeton. 



2. AMPHIOXUS AND THE ANCESTRY OF THE VERTEBRATES. 



By Arthur Willey, B.Sc. Lond. Univ. 



3. FISHES, LIVING AND FOSSIL. An Introductory Study. 



By Bashford Dean, Ph.D. Columbia. 



4. THE CELL IN DEVELOPMENT AND INHERITANCE. 



By Edmund B. Wilson, Ph.D. J.H.U. 



