246 REPORT OF THE CHEMIST OF THE 
200 —_ 
190 
170 
160 
150 
140 
130 
120 
110 5 — ; 2 
100 . 25 ss 
90 | 
80 
~ 
=) 
> 
°o 
ou 
oO 
> 
oO 
w 
oO 

w 
o 
ancentration HCl in H20 
3 
Concentration HCL inCasein 

/ ym = 4 an ro 7 
Hours Contact ———— 
Fic. 9.—Effect of temperature on action of *_HCI on casein. Points 
2 
marked ° signify no solution of casein detected. 
