SUBJECT INDEX 



941 



Horowitz and Beadle method, for choline, 



431, 432 

 Horse fat, composition, 193 

 Horse liver, tocopherols in, 801 

 Horsechestnut, /3-carotene in leaves, 513 



lutein in, 556 



violaxanthin in leaves, 567 

 Human blood serum, j3-carotene in, 524 



Ij'copene in, 545 

 Human fat, /3-carotene in, 524 



composition, 192-194 



constants, 236 



lutein in, 558 



lycopene in, 545 



tocopherols in, 802 



zeaxanthin in, 562 

 Human milk, ^-carotene in, 524 



fat composition, 195 

 random distribution and, 222 



tocopherols in, 802 



vitamin A in, 687 

 effect of dietarj^ vitamin A on, 687 



vitamins D in, 774 

 Human skin, lutein in, 558 

 Hunt and Taveau method, for acetyl- 

 choline, 431 

 Hydnocarpic acid, structure, 39 

 Hydrangea leaves, carotenes in, 520 

 Hydrocarbons, 400-404 (see also Caro- 

 tenes, Lycopene, Steroids) 



definition, 5 



n-eicosane, 403 



gadusene, 402 



J!-hentriacontane, 365-368, 376, 378, 382, 

 383, 403 



n-heptacosane, 367, 368, 374, 378, 381, 

 403 



n-nonacosane, 92, 366, 378, 381, 382, 403 



n-pentatriacontane, 403 



pristane, 402 



squalene, 247, 248. 400-402 

 Hydrogenation 148-153 



catalysts, 149, 150 



historical development, 148, 149 



hydrogenolysis and, 148 



methods, 149-151 



of fats, 275 



"selective," 152, 153 

 Hydrogenolysis, 148 

 Hydrolecithin, distribution, 439 

 Hydrolysis, of fats, 274, 275 

 Hydrolytic rancidity, 283, 284 



Hydroquinone, antioxidant activity. 289, 



295, 296 

 vitamin E biopot«ncy, 826 

 Hydrocjuinone diacetate, vitamin K bio- 

 potency, 850 

 Hydrosphingosine, 455 

 Hydroxy-acids, 26 



solubility, 68 

 a-Hydroxycerotic acid, 28 

 3-Hydrox3'^-5,7-choladienic acid 

 activated, biopotency, 781 

 provitamin D activity, 744 

 6-Hydroxychroman, vitamin E biopo- 

 tency, 823 

 2-Hydroxy-3-dimethyl-allyl-l,4-naphtho- 



quinone, vitamin K biopotency. 850 

 2-Hydroxydocosanoic acid (see Phellonic 



acid) 

 12-Hydroxydodecanoic acid (see Sabinic 



acid) 

 2-Hydroxyhexacosanoic acid (see a-Hy-, 



droxycerotic acid) 

 11-Hydroxyhexadecanoic acid (see Jala- 



pinolic acid) 

 16-Hydroxyhexadecanoic acid (see Juni- 



peric acid) 

 9-Hydroxy-lO-ketostearic acid, as oleic 



acid intermediate, 158 

 5-Hydroxy-7-myricinolactone, in candel- 



illa wax, 376 

 a-Hydroxjmervonic acid, discover}', 29 



in oxj'nervone, 476 

 2-Hydroxy-l,4-naphthoquinone, vitamin 



E biopotency, 826 

 5-Hydroxy-l,4-naphthoquinone, vitamin 



K biopotency, 850 

 12-Hydroxy-9-octadecanoic acid (see 



Ricinoleic acid) 

 f/-10-Hydroxypalmitone, in white sandal- 

 wood leaf wax, 378 

 11-Hydroxypentadecanoic acid (see Con- 



volvulinolic acid) 

 2-Hydroxytetracosanoic acid (see Cere- 



bronic acid) 

 2-Hydroxy-9-tetracosenoic acid (see Hy- 



droxynervonic acid) 

 Hypogene, 402 

 Hypophasic behavior, 619 



Identification, chromatography and. 654 

 Ileum, vitamin A in, 684 



