262 



ION SERIES AND PROTEINS, II 



10 



O 

 X 



s 



o 



zs 

 -a 

 c 

 o 



o 



o 

 cu 



pH 



2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 42 44 46 4fl 



Fig. 4. 



Figs. 4 and 5. Specific conductivity of gelatin chloride solutions of different 

 pH (but all 1 per cent in regard to isoelectric gelatin). Abscissae are the pH, 

 ordinates specific conductivity X 10^. Total conductivity means specific con- 

 ductivity X 10'* of the gelatin solution measured directly. From this is to be 

 deducted the specific conductivity of HCl of the same pH as the gelatin solution, 

 to obtain the real curve for the specific conductivity of gelatin chloride. 



Loeb, Northrop^), we may conclude that the middle curve represents 

 the specific conductivity of the gelatin chloride solution and that it 



« Northrop, J. H., /. Gen. Physiol., 1919-20, ii, 605. 



