New York AGRICULTURAL EXPERIMENT STATION. 253 
1000 
950 
850 
800 
750 
700 
650 | A 
650 
550 
500 
| 450 
4-00) | 
350 
nN 
oO 
S 
200 
)50 4 
100 
n 
9 
CONCENTRATION H,S0, a Casein 
CONCENTRATION H,S0, 12 H, 0 
Hou rsContact ie 3 if 3 
Fic. 13—Upper curve (B) represents action of water in extracting sul- 
phuric acid from casein that had taken it up. (Table XVI.) Two lower 
curves represent action of casein in taking up acid from Ay and ne solutions. 
(Tables XIV, XV.) 
