678 



DONNAN EQUILIBRIUM AND MEMBRANE POTENTIALS 



beaker containing the outside solution. The latter solution was 

 brought into contact with the gelatin in the side tube, the latter 



50 



1 — I 



f — e 



HDJ) 

 Q 



30 



20 



10 



601 Y 1 i :H--] — I \ 1 — I \ — I — \ 1 18 



17 



16 



15 



14 



13 



12 



11 



10 



9 



8 



7 



6 



5 



4 



3 



2 



1 







nilUMMlirillM. MMM 

 " 6192 4096 2048 1024 512 256 128 64 32 16 8 



Concentration of NaCl 



Fig. 3. Similarity of depressing effect of NaCl on swelling and p.d. of solid 

 gelatin chloride. 



dipping into the beaker. Table VI gives a comparison of the observed 

 P.D. and those calculated by multiplying the values pH inside minus 

 pH outside by 59. The agreement is satisfactory. 



> 



Pi 



•C5 

 > 



CD 

 O 



