TRANSACTIONS OF SECTION D. — DEPT. ANATOMY AND PHYSIOLOGY. 645 



sidered as very much modified and in no way representing the phylogenetic history ; 

 •while that in Elasmobranchii, in which there is no head-kidney, may he looked 

 upon as much more primitive. 



Comparing the development of the Wolffian body in Elasmobranchii with that 

 of the head-kidney in Amphibia, the fundamental similarity between them is at 

 once apparent. 



SA TURD A Y, A L'G VST 28. 

 The Department did not meet. 



MO^'^I)AY, AUGUST 30. 



The Department did not meet. 



TUESDAY, AUGUST 31. 

 The following Report was read : — 



Beport of the Committee for investigating the Influence of Bodily Exercise 

 on the Elimination of Nitrogen. — See Reports, p. 159. 



