IV. THE CELL IN DEVELOPMENT AND 

 INHERITANCE. 



EDMUND B, WILSON, PH.D., J.H.U., 



Professor of Invertebrate Zoology, Columbia College. 



This volume contains a presentation in a simple form of the 

 present state of our knowledge regarding cell-organization and 

 its bearings upon the phenomena of development. 



The point of view and mode of treatment differs widely from 

 that taken in Hertwig's recent work on the Cell. The cell is 

 treated primarily as the basis or substratum of inheritance. 

 Attention is therefore directed at the outset especially to the 

 germ-cells to their structure and maturation, their union in 

 fertilization, to the phenomena of cell-division, and to the earlier 

 stages of embryological development as illustrating the problems 

 of cell-dynamics. 



These chapters are used as an introduction to a more general 

 account of the cell, considered both as an independent organism 

 and as a unit of more complex structure and action. The organ- 

 ization of the cell is fully described, the functions of its various 

 parts critically discussed, and a review given of modern theories 

 of protoplasmic structure and action. The latter part of the 

 work is devoted mainly to recent discoveries in experimental 

 embryology in their bearing on the current theories of Weis- 

 mann, Hertwig, and others, regarding the essential nature of 

 development, differentiation, and regeneration. The volume 

 will be fully illustrated. 



Just Fublished. 



BIOLOGICAL LECTURES AND ADDRESSES 



DELIVERED BY THE LATE 



ARTHUR MILNES MARSHALL, M.A., M.D., D.Sc., F.R.S., 



Professor of Zoology in Owens College : Late Fellow of 

 St. John's College, Cambridge. 



EDITED BY 



C, F, MARSHALL, M.D., B.Sc,, F.R.C.S, 



Cloth, 12mo, pp. 363. $2.OO. 



THE MACMILLAN COMPANY, 



66 FIFTH AVENUE, NEW YORK. 



