( «a ) 



can be restored, by replacing the white corpuscles in the normal 

 serum. The answer will be found in the following table. 



TABLE IV. 



After being exposed to the action of increased concentration, 

 the leucocytes were replaced into normal serum. 



From this table it may be seen that after exposure to the action 

 of serum in which 0.2 % common salt had been dissolved, a solution 

 which had lowered the phagocytarian capacity by 29.6 0/ (see 

 table III), replacement in normal serum brings it back to its original 

 value. The action of serum in which 0.7 °/ of salt had been dissolved,, 

 however, causes a permanent loss of phagocytosis. Still, this loss is 

 not so great considering that, in the serum with 0.7 %, not a single 

 cell has taken up carbon, — in other terms, the phagocytosis has been 

 entirely paralysed. 



Now the phagocytes had only been exposed for half an hour to the 

 action of the concentrated media. This certainly may be considered 

 long enough for the small cells to readjust themselves to their new 

 medium. Still, it may be asked whether after a more prolonged exposure 

 the normal value of the phagocytarian power loould be restored too. This 

 question is of great importance for the functions of normal life, in 



