HOMClCYSTEINE, 8, 20. 180 



HOMOCYSTINE, 20 



HOMOGENTISIC ACID, 180 



HOMOPTERA, 21 



HOMOSERINE, 180 



HONEY, 82, 83 



HONEYDEW MELON, 113, 118, 119. 122 



HOOF MEAL. 104 



HORDEUM (SPP.). (See BARLEY) 



HORMISCIUM DERMATITIDIS. 43 



HORMODENDRUM (SPP.). 43 



HORMONES. 185. 187. 212; plant-. 15 



HORN MEAL. 104 



HORSE. 65. 79. 222. 224, 248 



HORSE MEAT. 82. 85. 87. 89 



HORSETAIL. 237 



HYACINTH, (HYACINTHUS 

 ORIENTALIS), 105 



HYALOGONIUM KLEBSH, 34, 35 



HYBORHYNCHUS (SPP.), 198. 204 



HYDNUM (SPP.), 43 



HYDROCHLORIC ACID. 154 



HYDROGEN, in culture media. 174. 175, 

 176; as a nutrient. 5. 18. 21, 165: pro- 

 duction of by bacteria, 220, 221 



HYDROGEN ACCEPTORS. 160, 162, 191; 

 (See also CARBOHYDRATE, FAT, PRO- 

 TEIN METABOLISM) 



HYDROGEN SULFIDE, 19, 20 



HYDROCENOMONAS (SPP.), 176 



HYDROLASE, 181. 182 



HYDROLYZED PLASMA, (FSF), 30 



HYDROXOCOBALAMIN, 10 



HYDROXY BUTYRIC ACID, 14, 180 



HYDROXYEMODIN, 217 



HYDROXYLAMINE, 17 



HYDROXY-4-METHOXY-TOLUQUINOL. 217 



HYDROXYMETHYL-FURANE-6- CARBOXY- 

 LIC ACID. 216 



HYDROXYPROLINE, in culture media, 100; 

 excretion of. 210; metabolism of, 160, 188; 

 as a nutrient, 24, 36, 37; daily require- 

 ments of, 23 



HYDROXYPYRUVIC ACID, 180 



HYDROXYTYRAMINE, 211 



HYENA, 82, 83, 196. 202 



HYLOBATES LAR. 84. 85 



HYMENOPTERA, 26, 30 



HYPERPLASTIC TISSUE, 226 



HYPERTHYROIDISM, 154 



HYPHOLOMA (SPP.), 43 



HYPNUM CUPRESSIFORME. 237 



HYPOCHNUS SOLANI, 43 



HYPOCHROMIC ANEMIA, 153 



HYPONITRITE, 16 



HYPOTHALAMUS. 227 



HYPOXANTHINE, 10. 13. 181, 183. 219 



HYPOXYLON PRUINATUM. 43 



ICTALURUS FURCATUS, 198, 204 



ILEX (SPP.), 105 



IMIDAZOLE DERIVATIVES, 211 (See also 

 specific Imidazole compounds) 



IMIDES, 17 



IMPATIENS BALSAMINA, 105 



INANITION, 153, 164 



INDICAN, 211 



INDIELLA AMERICANA, 43 



INDOLE, 14. 17. 180 



INDOLEACETIC ACID. 15, 17. 97. 166 



INDOLEPYRUVIC ACID, 180 



INORGANIC FERTILIZERS. 102, 103 



INORGANIC SALTS, (See also specific inor- 

 ganic salts), stability. 141 



INOSINE. 181. 182 



INOSITOL, daily allowances of. 48-74; in 

 culture media. 100; excretion of. 212; in 

 synthetic diets. 91; in lipid digestion. 179; 

 functions of. deficiency and excess signs 

 of. 159; in milk, 1 1 1; as a nutrient, 10. 25. 

 26. 29-31. 40-47; stability of. 186 



INSECT(S), (INSECTA). 5-22. 24-30. 91, 92. 

 199, 205, 230, (See also specific insects) 



INSULIN, 185, 187 



INTESTINAL BACTERIA, 179, 192 



"INTRINSIC" FACTOR, 157 



INULIN, 25, 26, 40, 41 



INVERT SUGAR, (See SUCROSE) 



INVERTASE. 178 



INVERTEBRATES. 5-22, 230, {See also 

 specific invertebrates) 



lODINE(lDE), absorption, retention of. 149; 

 daily allowances of. 48-74; deficiency of 

 and reproduction. 164; excretion of. 149. 

 214; in foodstuffs. 117. 119. 121; function, 

 deficiency and toxicity signs of. 154; in 

 metabolism. 151; in milk. 111; as a nu- 

 trient, 5, 33; and soil pH, 172 



lODISM, 153 



lODOPSIN, 155 



IPOMOEA BATATAS. (See SWEETPOTATO) 



IRIS, bearded (Iris spp.), 105 



IRON. (See also FERROUS(IC)). absorption, 

 retention of. 147; daily allowances of. 48- 

 74; in chlorophyll synthesis, 193; loss of 

 in cooking, 142; in cytochrome system, 

 191; excretion of, 147, 214; in feedstuffs, 

 133. 138. 139; in foodstuffs. 109. 110. 

 117. 119. 121; function, deficiency and 

 toxicity Signs of. 154. 167. 168, 170; in 

 metabolism, 151; metabolism of, 154, 

 192; in milk. HI; in nutrient solutions. 

 5. 21. 33. 174-176; producUon of. 128- 

 130; sources of. 93. 192; and soil pH. 172; 

 in tropical and sub-tropical fruits, 126. 

 127 



IRON BACTERIA. 176 



IRON SALTS, in culture media. 94-97 



IRON COMPLEX-GLOBULIN, 192 



IRON PHOSPHOPROTEIN (See FERRITIN) 



ISETHIONIC ACID, 8, 20 



ISLANDICIN. 217 



ISOACHLYA MONILIFERA. 43 



ISOALLOXAZINE, (See RIBOFLAVINE) 



ISOBUTYRIC ACID, 180 



ISOCITRATE, 15, 189 



ISOCITRIC DEHYDROGENASE, 189 



ISOLEUCINE. in culture media, 100; ex- 

 cretion of. 210; metabolism of, 180, 168; 

 as a nutrient, 7, 24. 36. 37; daily require- 

 ments of. 23: SUblllty of. 141 



ISOMERASE, 184, 165. (See also specific 

 isomerases) 



ISOPODS. 199, 206, 230 



ISOPROPYL ALCOHOL. 221 



ISOPTERA. 25 



ISOTOPES. 148 



ISOVALERIC ACID. 180 



ITACONIC ACID. 216 



ITATARTARIC ACID, 216 



IVY, 105, 233 



JACK FRUIT, 124, 126 

 JAGUAR, 62, 83 

 JAUNDICE. 153 

 JAVANICIN, 216 

 JENSEN SARCOMA. 226 

 JUGLANS (SPP.), (See WALNUT) 

 JUNIPER, COMMON, (JUNIPERUS COM- 

 MUNIS), 235 



KAINITE. 102 



KALANCHOE (KALANCHOE BLOSSFEL- 

 DIANA), 105 



KALANCHOE (BRYOPHYLLUM SP.), 233 



KALE, 93, 113. 118, 119, 122, 128, 142 



KANGAROO, red. 88. 89 



KELP. 104 



KENTUCKY BLUEGRASS, 105 



KERASIN. 27 



KERATINIZATION. 153 



KEROSENE. 18 



KETELIERIA (KETELIERIA DAVIDIANA). 

 96. 97 



KETOADIPIC ACID, a-, 160 



KETOBUTYRIC ACID, a-, 180 



KETOGENIC AMINO ACIDS. 186. 189, (See 

 also specific amino acids) 



KETOGLUTARAMIC ACID, a-, 180 



KETOGLUTARATE, a-, 15, 169 



KETOGLUTARIC ACID, (See KETOGLUTA- 

 RATE) 



KETOGLUTARIC DEHYDROGENASE, 189 



KETOISOCAPROIC ACID, 180 



KETOISOVALERIC ACID, o-, 180 



KETONE(S). 18 



KETOPENTADECOIC ACID.r-, 216 



KETOSTEROIDS. 212 



KETOSUCCINAMIC ACID. 0-, 180 



KIDNEY. 106. 107. 109, 147-149, 156, 158, 



161-163, 225; -cortex. 224 

 KINIXYS (SPP.), 197, 203 

 KINOSTERNON SUBRUBRUM, 197, 203 

 KLEBSIELLA PNEUMONIAE, 175 

 KLOECHERA (SPP.), 41, 43 

 KNOP'S MEDIUM, 99 

 KOILONYCHIA. 153 

 KOJIC ACID, 216 

 KREBS CYCLE, 15, 185, 187-190 

 "KREBS-HENSELEIT CYCLE", (ORNITHINE 



CYCLE). 183 

 KUDU, greater, 86, 67 

 KYNURENIC .ACID, 180 

 KYNURENINE. 3-hydroxy-, 180 

 KYNURINASE. 161 



LABILE METHYL GROUPS. 153. 156, 157 

 LABILITY OF NUTRIENTS, 140, 141 

 LABORATORY ANIMALS, (See also specific 



laboratory animals), diets for, 77-81 

 LABYRINTHULA VITELLINA, 9 

 LACCASE, 165 

 LACERTA (SPP.). 203 

 LACHNUM PYGMAEUM. 43 

 LACTALBUMIN. 22. Ill 

 LACTARIUS DELICIOSUS. 43 

 LACTASE. 176 

 LACTATE. 34. 40. 41. 165-187, 190, 213. 



216. 220. 221, 228 

 LACTATION, 61, 62, 65, 67. 70. 71, 111, 164 

 LACTATION MILK, 111, (See also COLOSTRUM. 



TRANSITIONAL MILK) 

 LACTIC ACID, (See LACTATE) 

 LACTIC ACID DEHYDROGENASE, 165 

 LACTOBACILLUS (SPP. ), 8, 12, 13. 37, 47. 



100, 101, 175, 220, 221, 240 

 LACTOBACILLUS CASEI FACTOR, (See FOLIC 



ACID GROUP) 

 LACTOBACILLUS BULGARICUS FACTOR (See 



PANTOTHENIC ACID) 

 LACTOFLAVIN (See RIBOFLAVINE) 

 LACTOGLOBULIN, HI 

 LACTOSE. 25, 26, 36-41. 176 

 LACTUCA SATIVA (See LETTUCE) 

 LAMA (SPP.). 86. 87 

 LAMB. 93, 106, 109 

 LAMBERTELLA (SPP.), 43 

 LAMELLIBRANCHS. 183 

 LAMINARIA PHYLLITIS. 239 

 LANTHANUM. 148 

 LARD. 69. 106. 109 

 LARUS MARINUS, 90 



LASIODERMA SERRICORNE. 22. 25. 27-29 

 LAUREL, cherry. 233 

 LAURIC ACID. 28 

 LEAD. 21. 148. 214 

 "LEAF FACTOR". 92 

 LEAF (LEAVES). 166-171. 233 

 LECITHIN. 27. 157. 166, 179. 166. 219; -oil. 



30 

 LECITHINASE. 179 

 LEECH. 201 



LEGUMES. 93. 142. 194 

 LEISHMANIA (SPP. ). 31. 232 

 LEMON. 105. 113. 116, 119. 122. 124. 126, 



129. 236 

 LENTINUS (SPP.). 43. 219 

 LENZITES (SPP.). 38. 43 

 LEOPARD. 82. 83. 196. 202 

 LEPIDIUM SATIVUM. 105 

 LEPIDOPTERA. 21. 22, 25. 28. 30 

 LEP1IX)STEUS OSSEUS. 198. 204 

 LEPIOTA (SPP.). 43 

 LEPTOMITUS LACTEUS. 38 

 LEPTOMONAS (SPP.). 232 

 LEPTOPTILOS DUBIUS. 90 

 LESPEDEZA HAY. 136. 139 

 LETTUCE. 85. 67. 69. 105, 113. 118. 119, 



122, 128, 170, 171, 233 

 LEUCINE, in culture mediu, 100; deficiency of 



and reproduction. 164; excretion of. 210; 



373 



