SUBJECT INDEX 



569 



Sodium nitrite, 40 



sulfite, 184 

 Solubilities of vitamins. 5"^^ under each 



Vitamin 

 Sorghum, 515 

 Sorrel, 148, 197 

 South African foodstuffs, 380 

 Soy-bean, 119, 122, 137, 155, 156, 379, 



426, 473 

 cracker, 169 

 flour, 169, 184, 434 

 oil, 225, 270, 431 

 Sparing action of fat for vitamin B, 82 

 Spectroscopic tests, 250, 302, 304, 327 

 Spinacene, 237 

 Spinach, 54, 93, 197, 200, 226, 232, 234, 



250, 268, 272, 326, 328, 329, 332, 



364, 371, 386, 420, 421, 451, 455, 



487, 500, 510, 527 

 fat, 505 

 Spleen, 70, 139, 146, 163 

 Spontaneous cures in vitamin B defi- 

 ciency, 79-80 

 Squalene, 238 

 Squash, 231, 268 



Stability. See under each Vitamin 

 Starch, 15, 51, 54, 100, 103, 175, 324, 



326 

 Starvation, 71, 500, 523, 529. See also 



Inanition 

 Stems, 93 

 Steenbock theory of relationship of 



plant pigments to vitamin A, 243- 



250 

 Sterility, 336, 338, 341-344, 349, 354, 



391, 456, 458, 485, 514. See also 

 Reproduction; Vitamin E 



Sterols, 235-238, 348, 349, 383, 393, 395, 



414, 416, 428, 440, 489, 515 

 Stomatitis, 143, 144 

 Storage, of food, effect on vitamins. 



See under each Vitamin 

 of vitamins in body. See under each 



Vitamin 

 Strawberries, 189, 440 

 String beans, 205, 420, 487 

 Strontium, 501 

 Structure. See chemical nature under 



the Vitamin concerned 

 Sulfanilic acid, 44 

 Sulfur, 62, 216, 349 



dioxide, 191, 234, 303 

 Sulfuric acid test for liver oils, 238, 383, 



392, 408, 486 

 Sunflower, 251 

 Sunflower-seed oil, 225, 270 

 Sunlight, 251, 252, 296, 297, ZZ2>, 366, 



368, 394, 428, 441, 457, 471, 479, 

 481, 482, 486, 490, 497, 501, 507, 

 517, 525, 530. See also Irradia- 

 tion ; Light ; Rickets ; Vitamin D 

 Suprarenal glands, 364, 368, 431, 436 



Survival period on Vitamin-A-free diet, 

 258, 280, 284-286 

 on vitamin-B-free diet, 100-101 

 on vitamin-C-free diet, 171-174 



Swedes, 164, 193, 199. See also Ruta- 

 bagas 



Sweet potato, 93, 196, 231, 268 

 leaves and shoots, 491 



Swine, 160, 364, 410, 427, 459, 469, 504 



Symbiosis, bacterial, as factor in vita- 

 min B supply, 84 



Symptoms, 85, 171-174. See also under 

 each Vitamin 



Synthesis of vitamins, 83, 250, 331, 444, 

 511. See also under each Vita- 



Tamarinds, 192 



Tangerines, 192 



Tankage, 364 



Tannic acid, 29, 62 



Taro, 196 



Tea, 463, 467 



Technique. See Methods ; also name 



of each Vitamin 

 Teeth, 161-163, 165, 167, 168, 177, 178, 



179, 366, 405, 408, 422, 427, 436, 



453, 460, 488, 517, 524, 532 

 Temperature in relation to formation 



and stability of vitamin D, 305, 



310, 328, 329 

 in relation to stability of vitamin A, 



228-250 

 in relation to stability of vitamin C, 



444 

 of body in vitamin B deficiency, 77-79 

 Terminology, 20-23 

 Testis, 70, 76, 341-344, 458, 459, 480 

 Tetany, 420, 477, 501, 514, 519, 525 

 Tetrahydroxypyridine, ZZ 

 Thermo-labile factor. See Vitamin B 

 Thermo-stable factor. See Vitamin G 

 Thermostability. See Heating and 



Temperature 

 2-Thiol-4-amino methyl glyoxaline, 50 

 2-Thiol-5-amino methyl glyoxaline, 50 

 Thionyl chloride, 306 

 Thymine, 26 



Thymus, 70, 76, 492, 497, 526 

 Thyroid, 70, 76, 409, 443, 451, 460, 467, 



496 

 Thyroxine, 43 

 Tibia, 315 



Tiki-tiki, 131, 354, 491, 523 

 Timothy, 232 



Tinct. Limonis Fort. B.P.C., 527 

 Tintometer, 239, 249 

 Tissues, 31, 55, 75, 86, 270, 420, 433, 487 

 Togi, 94 

 Tomato and tomato juice, 72), 92-94, 106, 



119, 139, 160, 172-175, 187-189, 



