JACQUES LOEB 



675 



It follows from these experiments, first, that the curves represent- 

 ing the influence of neutral salts on p.d. are similar to the curves 

 representing the influence of the same salts on the osmotic pressure of 



400 

 375 

 350 

 325 

 300 



^ ^'^^ 

 S 250 



^225 



.y 200 



I 175 



O 150 



125 



100 



75 



50 



25 



28 



26 



24 



22 



20 



18 



16 



14 



12 



10 



6 



6 



4 



2 







■»-> 



T— ) 



.s 



O 



nJlUlLIlIlIlIIlIIill 

 " 4096 2048 1024 512 256 128 64 32 16 8 



Concentration of CaClg 



Fig. 2. Similarity of depressing effect of CaCU on osmotic pressure and p.d. 

 of gelatin chloride solution. 



the same gelatin chloride solutions; and second, that the p.d. cal- 

 culated by multiplying the values of pH inside minus pH outside 

 by 59 agrees quite closely with the observed p.d. 



