JACQUES LOEB 



103 



Fig. 11 gives the curves for the viscosity of gelatin citrate, tartrate, 

 and succinate. The three curves are practically identical and also 

 identical with the curves for gelatin chloride and gelatin phosphate 

 in Fig. 10. 



I 



CO 



o 

 o 

 ir> 



S- 



o 

 o 



CO 



> 

 o 



'o 



a. 



pH 1 



4.7 5 



6 



Fig. 12. Curves of specific viscosity of gelatin acetate, mono-, di-, and trichlor- 

 acetate. Curves identical with those for gelatin chloride and phosphate. 



Fig. 12 gives the curves for the viscosity of 1 per cent solutions of 

 originally isoelectric gelatin to which acetic and mono-, di-, and tri- 

 chloracetic acids have been added. The curves are again identical 



