INDEX 



411 



Triticum sativum, 275, 278. 

 Tritona, 115. 

 Tropceolum, 155, 164. 

 majus, 132. 

 Tropane, 267. 

 Tropistic movements, 359. 

 Trypsin, 327, 348, 355. 

 Trypsinogen, 355. 

 Tryptophane, occurrence in plant, 321 ; 



reaction, 373. 

 Tunicates, 131. 

 Tunicin, 131. 

 Turkish galls, 212. 

 Tyrosine, 307, 316, 359, 360 ; occurrence 



in plant, 321. 



ULOTHRIX subtilis, 280. 



Ultra-violet light and photosynthesis, 



160, 164. 

 Ulva, 229. 

 Umbelliferae, 396. 

 Unsaponifiable residue of fats, 15. 

 Unsaturated compounds, 9. 

 Urea in plants, 279, 340. 

 Urease, 348. 

 Uric acid, 279. 

 Urine, 201. 

 Urtica, 231, 236, 242. 

 Utricularia, 127, 195, 218. 



VACCINIUM Vitis Idcea, 174, 202. 



Myrtillus, 385. 

 Valine, 315. 

 Valonia, 210, 216. 

 Vanilla, 35. 



planifolia, 189. 

 Vanillin, 189. 

 Varnish, 4. 

 Vaucheria, 2, 35, 

 Veratrine, 203. 

 Veratrum sabadilla, 203. 

 Verbascum Thapsus, 17. 

 Vicia Faba, 228, 323, 359. 



Vicia sativa, 45, 275, 279, 321. 

 Violaceae, 115. 

 Vigna sinensis, 323. 

 Viscoid, 143. 

 Viscose, 134, 143. 

 Vitis, 387. 



WALNUT oil, 4, 20. 



Wash wood, 184. 



Water melon oil, 20. 



Wax, chemical signifiance of term, i ; 



composition, 6, 44 ; function, 43 ; 



occurrence, 43, 230. 

 Weld, 246. 



Wheat, 68, 121, 322, 324, 346. 

 meal oil, 19. 

 Wijs' iodine value of fats, 31. 

 Willow, 174. 

 Wood gum, 57, 59. 

 Wound gum, 126. 



XANTHINE, 277, 281. 



Xanthone, 244. 



Xanthophyll, 229, 241, 243, 262. 



Xanthoproteic reaction, 307, 308. 



Xeranthemum, 177, 



Xerophytes, 128. 



Xylose, 53, 59. 



YEAST, 73, 108, IOQ, 121, 170, 278, 338, 

 373 374 5 action on amino acids, 

 339 ; fermentative activity, in ; see 

 also Saccharomyces. 



Yellow wood, 246. 



Yew, 199. 



Ylang Ylang, 385. 



Yucca, 115. 



ZEA Mais, 177, 182, 345, 346, 385. 

 Zygnema, 194. 



Zymase, 73, 349, 374-77, 383 ; quanti- 

 tative estimation of activity, 383. 

 Zymo exciters, 299. 



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