104 



ION SERIES AND PROTEINS. 



"53 

 CP 



h 



O 



i 



8 



o 



S pH47 5.2 5.7 62 6.7 72 7.7 62 &7 92 97 10.2 m 11.2 117 





Fig. 13. Curves for the number of cc. of 0.1 n NaOH, KOH, Ba(0H)2, and 

 Ca(0H)2 required to bring 1 gm. of isoelectric gelatin to diflferent pH (in 100 cc. 

 of solution). All four curves are identical. 



_ 2.3 

 L 2.2 

 ■§ 2.1 



o 



2.0 



^ ,1.9 



1.8 



in 



1.7 

 1-6 

 1.5 

 1.4 



,o 

 o 



'■§ 1.2 



^ 1.1 



1.0 



pH 4 5 6 7 8 9 10 11 12. 



Fig. 14. Curves for specific viscosity of Na and Ca gelatinate for different pH. 



