Columbia University Biological Series. 



EDITED BY 



HENRY FAIRFIELD OSBORN, 



Da CoHta Professor of Zoology in ColinnOia University, 

 AND 



EDMUND B. WILSON, 



Professor of Zooloyy in Columbia UniverMy. 



This series is founded upon a course of popular University 

 lectures given during the winter of 1892-3, in connection with 

 the opening of the new department of Biology in Columbia 

 College. The lectures are in a measure consecutive in charac- 

 ter, illustrating phases in the discovery and application of tlie 

 theory of Evolution. Thus the first course outlined the de- 

 velopment of the Descent theory; the second, the application 

 of this theory to the problem of the ancestry of the Vertebrates, 

 largely based "upon embryological data; the third, the applica- 

 tion of the Descent theory to the interpretation of the structure 

 and phylogeny of the Fishes or lowest Vertebrates, chiefly based 

 upon comparative anatomy ; the fourth, upon the problems of 

 individual development and Inlieritance, chiefly based u|)on the 

 structure and functions of the cell. 



Since their original delivery the lectures have been carefully 

 rewritten and illustrated so as to adapt them to the use of Col- 

 lege and Uuiversity students and of general readers. The vol- 

 umes as at present arranged for include: 



I. From tlift Greeks to Darwin. By Henry Faiefield 



OSBORN. 



II. Aiiipliioxus aiul the Ancestry of tlie Vertebrates. 



By Arthur Willey. 

 III. Fishes, Living and Fossil. By Bashford Dean. 



IV. The Cell in Development and Inheritance. By 



Edmund B. Wilson. 



V. The Foundations of Zoology. By William Keith 



Brooks. 



THE MACMILLAN COMPANY, 



66 FIFTH AVENUE, NEW YORK. 



