SUBJECT INDEX 



"A" vitamin. See Vitamin A 



Abscesses, 279, 280, 282. See also Cavi- 

 ties, Cysts 



Absorption band of vitamin A, 240-249, 

 489 



Absorption of alveolar processes of 

 teeth, 162 



Absorption spectrum, effect of time of 

 irradiation on, 311, 312 

 of cholesterol, 306, 308, 414, 439 

 of ergosterol, 306, 307 

 of vitamin D, 414, 480 

 use of, in detection of ergosterol in 

 cholesterol, 305 



Accessory substances, 25. See also each 

 Vitamin 



Acetic acid, 47, 62, 108, 304, 447. See 

 also Vitamin B, concentration of 



Acetone, 129, 305, 328, 345. See also 

 Vitamins B and G, concentration 

 of 



Acetyl chloride, 234 



Acetylation, 237 



Acid. See name of each 



Acid-base balance of diet in production 

 of rickets, 501, 533 



Acid clay, 42 



Acid, effect of, on vitamins. See under 

 each Vitamin, chemical proper- 

 ties, stability 



Acidification of alcohol in extraction of 

 vitamins B and G, 136 



Acids. See name of each ; see also 

 Amino acids 



Activated fullers' earth, 32, 37, 47. See 

 also Vitamin B, concentration 

 of 



Activation, antirachitic, 507. See also 

 Irradiation; Vitamin D 



Activity, hydrogen-ion, as affecting sta- 

 bility of vitamins, 59, 63, 64, 66, 

 69, 106, 107, 109, 124, 126, 127, 

 128, 136, 148, 149, 181, 183, 188, 

 211-213, 216, 233-234, 444, 483, 

 485, 491, 495, 498, 501, 530. See 

 also descriptions of Vitamins B, 

 C and G 



Adenine, 32, 34, 35, 37, 128, 408 



Adjustment, period of, in measurement 

 of vitamin values, 132, 135 



Adrenaline, 43, 406, 495 



Adrenals, 70. 160. 163, 329, 361, 381, 

 450, 457, 479 



Adsorbent, relation of amount of, to 

 adsorption of vitamin B, 109, 409 

 of vitamin G, 136 

 Adsorbents. See name of each ; also 

 Adsorption, and under each 

 Vitamin 

 Adsorption, 26, 109, 114, 122, 127, 531 

 of vitamin B, 26, 109, 110 

 of vitamin G, 127 



See also names of adsorbents and 

 Vitamins B, C and G 

 Aeration, 106, 229-238, 531. See also 



Oxidation 

 Agar, 54, 56, 225, 316, 320, 463 

 Age, as influencing vitamin A content 

 of body, 254 

 of vegetables as affecting vitamin C 



values, 194, 195, 196 

 See also each Vitamin, relation to 

 nutrition 

 Agglutinins, 524, 531 

 Aging of food in relation to vitamin 

 values. See each Vitamin; also 

 names of individual foods 

 Air, apparently deleterious in extraction 

 of vitamin by alcohol, 136 

 See also Aeration, Oxidation 

 Alcohol, as solvent for ergosterol, 312 

 extraction of vitamin A value from 



plant tissues, 227-228 

 for concentration of vitamin D, 304 

 in extraction of vitamin D, 328 

 purification of casein by, 100 

 solubility of vitamins in, 20; and un- 

 der properties of each Vitamin 

 5"^^ also Vitamin B, concentration of 

 Alcohol-petroleum ether mixture, 227- 



228 

 Alcohol-water-benzene mixture, 113 

 Alfalfa, 169, 225, 227, 232, 234, 268, 295, 

 320, 323, 324, 328, 340, 379, 385, 

 506 

 Algse, 251, 446 

 Alimentary tract, 142, 144 

 Alkali, effects of, on vitamins. See de- 

 scription of each Vitamin 

 Alkalinized orange juice, 183 

 Alkaloid, 26, 109 

 Alkylamines, 68 

 Allantoin, 284, 353 

 Alligator pear. See Avocado 

 Allophanates of certain sterols, 515 

 Almond oil, 253, 270, 464 



553 



