99§ 
INDEX OF SUBJECTS. 
Xanthoproteic reaction, 
Xylose, 
PAGE 
. 47 
2, 3, 16, 612 
Yeast, action of, on monosaccharides, . 7 
,, fermentation, . . . .611 
,, inverting ferment of, . . 10 
,, nuclein, 3, 64 
PAGE 
Zein, 54 
Zymogens, .... 83, 543, 551 
Zymolysis, 320. See also Enzymes. 
,, effect of chemical reaction on, 320 
,, ,, „ concentration on, . 322 
,, ,, ,, fermentation pro- 
ducts on, . . 320 
,, ,, ,, temperature on, 320, 327, 
331, 335, 337, 339 
