THE VITAMIN B COMPLEX 



Nicotinic acid — {continued) 



, 2-acetyl-, 291. 



, 2-amino-, 288. 



— — , 6-amino-, 293. 



, 2-fiuoro-, 293. 



, 3-fluoro-, 293. 



, 6-fluoro-, 293. 



, hexahydro-, 291, 293. 



, 6-methyl-, 288. 



, I -methyl- 1 : 2 : 5 : 6-tetrahydro-. 



See Arecaidine. 



— — , 1:2:5:6- tetrahydro -. See 



Gervacine. 

 anilide, 289. 



— N-methylamide, 288, 289, 290, 294. 

 Nicotin-(4'-methoxyphenyl) -amide, 294. 

 Nicotinonitrile, 294. 

 Nicotinphen^'-lamide, 294. 

 Nicotinuric acid, 219, 221, 223, 224, 



252, 253. 257, 288, 290, 293. 

 , estimation in presence of nico- 

 tinic acid, 228. 

 Nikethamide, 218, 258, 261, 279, 288, 



289, 290, 291, 294. 

 Nipecotic acid, 288, 291, 



, N-pantoyl-, 398. 



Nippostrongylus wiuris, effect of aneur- 

 ine deficiency on suscepti- 

 biUty to, 52. 

 , — riboflavine deficiency on sus- 

 ceptibility to, 171. 

 Norbiotin, 446, 453. 

 Nordesthiobiotin, 449. 

 Norit eluate factor, 457. 



— filtrate factor, 457. 

 Noroxybiotin, 452. 

 Notatin, 197. 



Nucleic acid synthesis and vitamin B12, 



543- 

 Nucleotidases, 229, 279. 

 Nutritional status, assessment of, 63, 



179, 223. 256, 259. 

 Nuts, vitamin content of, 43, 164, 233. 



Oats, vitamin content of, 43, 164, 232, 

 423. 550, 570. 571. 587- 



Ocular symptoms of riboflavine de- 

 ficiency, 168, 169, 170, 173, 174, 200. 



Oestradiol, 200, 521. 



— benzoate, 492. 



Oestrogens, effect of aneurine deficiency 

 on, in activation of, 200. 



— , — folic acid on response to, 486, 

 492. 521. 



— , — riboflavine deficiency on inac- 

 tivation of, 200. 



Oestrone, 200. 



Oestrus cycle, effect of aneurine de- 

 ficiency on, 31. 



Oestrus cycle, effect of riboflavine de- 

 ficiency on, 32. 



Oidium lactis, 107. 



Old yellow enzyme, 193, 194. 



Onions, vitamin content of, 43, 165, 233, 

 363. 588. 



Ophiostoma catonianum, 339. 



— coeruleum, 109. 



— fagi. 439- 



— miiUiannulatum, 109. 



— piceae, 109. 



— piliferum, 439, 



— pint, 109, 



— pluriannulatum, 109. 



— quercus, 109. 



— stenoceras, 109. 



— ulmi, 109. 

 Opisthotonus, 10, 46, 47. 



Oranges, vitamin content of, 43, 164, 



316, 363. 

 Orchid seeds, germination of, 109, 286. 

 Ornithine, 251, 628. 

 — , dinicotinyl-, 256. 

 Ornithine decarboxylase, 332. 

 Orotic acid, 514. 

 Oryzanin, 10. 

 Ovoflavine, 134. 



Oxaloacetic acid, 97, 387, 442, 443, 444, 

 625, 626, 627, 628. 



cycle, 625. 



decarboxylase, 443. 



Oxalosuccinic acid, 443, 626, 627, 628. 

 Oxybiotin, 442, 450, 451, 453. 

 g^i-Oxybiotin, 452. 

 Oxy-isomytilitol, 579. 

 Oxy-mytilitol, 579. 

 Oxythiamine, 51, 117, 127, 128. 

 Oysters, vitamin content of, 233. 



Pantamide, 355, 387, 398. 



— , N-(j9-diethylaminoethyl)-, 398. 



— , N - (5 - diethylamino - 2 - pentyl) - , 



398. 

 Panthenol, 396, 400. 

 Panthydrazide, 398. 

 Pantocaine, 560. 

 Pantoic acid, 350, 354, 375, 383, 386, 



387. 

 — , resolution of, 354. 

 Pantolactone, 350, 353, 355, 356, 383, 



386, 387. 

 — . resolution of, 354, 356, 375. 

 Pantonine, 395. 

 Pantothenic acid 



analogues of, 394-403. 



animal and human requirements of, 



377-379- 

 antagonists of, 381-385, 397-401. 

 biosynthesis of, 387. 

 chemical constitution of, 352-359. 



678 



