THK XEW PHYSIOLOGY. 

 to tk 



So far as tke facts are 



ithr increasing. We have only to 

 of sack men as Black, Priestiev, Lavoisier, 

 Like Wohler, who synthesized urea* Liehig 

 TitaKst, For him there was a eential 

 of Tital activity under the control of the " vital 

 force " ; but outside this central kernel IK iaJtimtttd 

 the phenomena of nutrition on purelv chemical ones. 

 He thought of ojLygen as snmrtniBg free to n>ifaii? any- 



4-'U-C-v>^ ^_'i^i_i_1-l-i- ^. ZlV. J\. Vww4vr - ,,^-,1 -^B-l^a-f- ic -r%M-k_ 



tnnig uiiiiiiinir witiiin tue ooay. except wnac is pro- 

 tected by the vital force ; and he assumed that the greater 

 the concentration of oxygen in the hings, and the greater 

 the supply of food-material to the body, the greater will 



