The Development of the Kidney in the Rabbit 



by 



John Berry Haycraft M. D., D. Sc, 



Professor of Physiology, University College, Cardiff. 



(With 16 figs.) 



Introductory. 



During the course of an experimental investigation into the func- 

 tions of the rabbit's Kidney, I felt uncertain as to the truth of some 

 statements, regarding the minute anatomy of the organ, which have 

 received general acceptance. Afraid to continue the research without 

 a sound anatomical basis, I studied the development of that organ, 

 and, as the development of the Kidney is so intimately associated with 

 that of the Wolffian Body, its study was likewise undertaken. 



I have had little experience in connection with embryological 

 work, as will probably be apparent to those experts who follow this 

 paper, and I have avoided many questions about which I have only 

 knowledge at second hand. On the other hand I am in hopes that 

 an embryological question approached from the side of histology may 

 possibly receive some additional elucidation. 



Owing to the lack of suitable material, my work would have been 

 greatly delayed, but for the kindness of several of my friends. To 

 the late Mr. George Brook, lecturer on Embryology in the University 

 of Edinburgh, I am indebted for almost all of my preparations of 

 embryo rabbits, which were prepared and cut for me in his laboratory; 

 and to Professor Howes and Mr. Martyn Woodward I am indebted 



