SUBJECT INDEX 



501 



Vitamine A, chemistry of, 218 



demonstration of, use of animal 



tests in, 225 

 effect of heat on, 224 

 effect of lack of, on growth of 



rats, 118, 119 



effect of, oxidation on, 224 

 effect of, reduction on, 224 

 effect of, ultra-violet light on, 224 

 in butter, 220 



in cod liver oil, 218, 219, 220 

 in fat-free milk, 223 

 in grasses, 221 

 in green leaves, probable formation 



of, 72, 226 



in physiology and pathology, sig- 

 nificance of, 223 

 in synthesis of neutral fats, role of, 



226, 227 



in vegetables, 221 

 nature of, 222 

 possible differentiation -of, from 



antirachitic vitamine, 42 

 properties of, 223 

 relation of, to carrotinoids, 222, 



223 

 relation of, to edema, prophylaxis 



of, 227 



relation of, to lipoids, 228, 229 

 relation of, to ophthalmia, 229 

 relation of, to urinary calculi, 



227 



solubility of, in water, 223 

 stability of, 224 

 Vitamine B, adsorption of, from auto- 



lyzed yeast, with colloidal ar- 

 senic sulfide, 189 

 with fuller's earth, 188 

 with mastic, 189 

 adsorptive capacity of proteins for, 



43 

 attempted isolation of, from rice 



polishings, 172, 173, 174, 175, 176 

 attempted isolation of, from yeast, 



177 



attempted synthesis of, from 

 adenine, 193 



attempted synthesis of, from nico- 

 tinic acid, 193 



attempted synthesis of, from o- 

 oxypyridine, 193 



attempted synthesis of, from p- 

 oxynicotine, 193 



as possible mother-substance of 

 product of endocrine glands, 208 



chemistry, physiology and pharma- 

 cology of, 163, 207 



demonstration and estimation of, 



195 



animal tests, 195, 197, 198 

 phenol reaction, 197 

 phosphorus content, 196 

 nitrogen content, 196 

 uric acid reaction, 197 

 yeast fermentation test, 198 

 yeast growth test, 198, 199, 200, 

 201 



suitability of for water-soluble 

 vitamines but not for vita- 

 mine B, 203 



effect of, on scurvy, 41 



effect of lack of, ori growth of rats, 

 118, 119 



fractionation of, difficulties in- 

 volved in, 164, 165 



in carbohydrate metabolism, role 

 of, 212 



influence of, on food intake of rat, 

 119 



in yeast, theory of occurrence of, 

 as nucleoproteid, 189, 190 



its possible differentiation from the 

 growth-promoting substance, 41, 

 42, 44, 53, 203, 204 



nature of, means for studying, 

 165, 166, 167 



non-identity of, with secretin, 209 



preparation of, from yeast, as ac- 

 tive crystalline substance of con- 

 stant melting point, 165 178, 179, 

 180, 181 

 analyses of, 182, 183, 184 



