258 



ESSENTIALS OF CHEMICAL PHYSIOLOGY 



Wave theory of light, 222 



Weights and measures, 6, 7 



Whartonian jelly, 30 



Whetstones, 156 



Whey, 49, 54 ; salted, 49 



Whey protein, 54 



White blood corpuscles, 110, 196 



White of egg, 3, 27, 29, 37, 38, 43, 45, 



62, 78, 180 

 Whole flour, 57, 58 

 Widal's reaction, 124 

 Witte's peptone, 182 

 Wdhler, preparation of urea, 145 

 Wooldridge on tissue-fibrinogen, 46, 196 

 ' Worth ' of corpuscles, 222 



XANTHINE, 47, 80, 110, 159-161 

 Xanthine group, 46, 159 



Xanthoproteic test, 27, 39 

 Xylose, 178 



YEAST, action of, 17, 19, 66 ; cells, 63 ; 

 in bread-making, 58; in testing for 

 sugar, 169 



Yellow lipochrome, 200 

 : Yolk of eggs, 56 



ZEIN, 35, 48 

 Zeiss's polarimeter, 228 

 Zinc, 8 



Zuntz's gas apparatus, 234 

 Zymogen, 70, 72, 80, 105, 187 ; granules, 

 187 



PIIIXTKD BY 



spun is\voo:>i-: AND co. LTD., xi :\v STIIUKT SQUAHK 

 LONDON 



