GROWTH IN LENGTH 



EMBRYOLOGICAL ESSAYS 



BY 



RICHARD ASSHETON, M.A., Sc.D., F.R.S. 



Trinity College, Cambridge 



Lecturer in Biology at Guy's Hospital in the University of London 



Lecturer in Embryology at the Imperial College 



Lecturer in Animal Embryology in the 



University of Cambridge 



With 42 Illustrations 



Cambridge : 



at the University Press 

 1916 



