6 3 



INDEX 



Treub, 160, 406, 582 ; hydrocyanic acid in 

 Pangium edule, 457. 



Treviranus, 151, 212, 217,225,226,231, 241, 

 262, 500, 593. 



Trianea, temporary production of tannin 

 by, 493 ! T. Bogotensis, 59, 194 ; accu- 

 mulation of methyl-blue in cell-sap of, 

 94 ; of methyl violet and cyanin in 

 plasma of, 94. 



Trichites, 80. 



Trichostomum tophaceum, calcareous in- 

 crustation of, 132. 



7> if oli inn, 400. 



Trimethylamine, 132; evolution of, by 

 Chenopodtum, 391. 



Trinchinetti, 101,368; absoption from dilute 

 solutions, 129. 



Trioses, 469. 



Trioxymethyl, 326. 



Triticin, 476. 



Triticum, 151 ; root-system of, 152, Fig. 13; 

 respiratory activity of, 525 ; 7'. vulgare, 

 461 ; absence of carbohydrates from 

 epithelium of scutellum. 588. 



Tropaeolum, 243, 278, 331 ; T. majus, 340; 

 formation of asparagin during germina- 

 tion of, 600. 



Trophic substances, 445 ; definition of, 289. 



Trophoplasm, 48. 



True, 422. 



Trypsin, 508, 509. 



Tschaplowitz, 235. 



Tschirch, 118, 189, 190, 315, 316, 437, 478, 

 500, 597 ; on chlorophyllan, 316. 



Tubers, 604 ; respiration of, 525. 



Tulipa Gesneriana, production of coloured 

 flowers in darkness, 496. 



Tumas, 349. 



Tungsten, 437. 



Tunicata, cellulose in, 481. 



Turgid cell, model of, 135. 



Turgid pressure, of terrestrial, aquatic and 

 starved plants, 139. 



Turgidity, existence of, in dying cells, 455 ; 

 importance of, 142. 



Turgor, 134. 



Typha, I So. 



Tyrosin, 459. 



Tyrosinase, 510. 



Ulbricht, 262. 



Umbelliferae, occurrence of sugar in, 474. 



Unger, 130,156, 161,182,191,194-7,211,212, 

 217, 227, 231, 241-5, 250, 258, 260-2, 

 269, 280-2, 286, 309, 368, 583 ; on 

 calcareous incrustations on Saxifrages, 

 131 ; --on Eucladium and Trichosto- 

 mum, 1 32 ; evaporation from leaf and 

 free surface of water, 240. 



Uninucleate cells, 58, sec. 10. 



Urase, 508. 



Urea, as product of chemosynthesis in 

 nitrate bacteria, 356. 



Urtica, 185 ; U. urens, 258 ; U. dioica, 259, 



278. 

 Utricularia, 379. 



Vacciniitm, 490. 



Vacuolar membrane, 91. 



Vacuoles, function of, 42. 



Vaizey, 216. 



Vallisneria spiralis, 311, Fig. 44. 



Valonia, absence of magnesium from cell-sap 



of, 432. 



Vampyrella vorax, 377. 

 Vanadium, 438. 



Van Beneden, on deutoplasm, 46. 

 Van 't Hoff, 71 ; physics of osmotic pres- 

 sure, 144. 



Vanilla aroniatica, \ 56. 

 Variation, 31, sec. 5. 

 Vascular systems, in mosses, climbers and 



aquatic plants, 216. 

 Vaitcheria, 42, 58, 61, 411 : endophytic 



rotifers of, 371, 539; V. sessilis, 320. 

 Vaudin, 428. 

 Verschaffeldt, 248. 

 Verworn, effects of absence of nucleus, 



5i,52, 55- 



Vesque, 221, 232, 239; automatic registra- 

 tion of transpiration, 242 ; influence 

 of temperature on absorption of water, 

 229. 



Vessels, composition of air in, 206. 



Vicia, 458, 461, 466 ; removal of cotyledons 

 f, 593 i V.fabd) 181, 285 ; respiration 

 in, 524 ; - - intramolecular, 537 ; post- 

 mortem oxidation in, 545, 546; self-de- 

 pletion of cotyledons of, 599 ; V saliva, 

 464, 465 ; analyses of seedlings, 467. 



Vierordt, 345. 



Vignal, 522. 



Ville, 402, 405, 413, 429. 



Vines (S. H.), 211^ 257, 324, 379, 460. 



Viola In tea var. multicaulis, 436 ; V. tricolor, 



436. 



Vis a tergo, 226. 



Vise it in, 367, 369. 



Vitis, 206, 278 ; V. vinifera, 265 ; exuda- 

 tion-pressure of, 259. 



Vochting, 324, 365, 475, 497, 578, 604. 



Vogel, 499 ; non-formation of quinine in 

 Europe, 499. 



Voigtlander, on diffusion, 92. 



Volcker, 281, 379. 



Volkens, 190, 203, 228, 278, 280; on saline 

 incrustations, 131, 162. 



Vorticella campanula, 306. 



Vries, de, 108, 196, 232, 327, 332, 378, 409, 

 497, 498, 580, 582, 588, 593, 600, 604; 

 examples of turgid pressure, 139 ; 

 - due to different substances, 141 ; 

 importance of plasma-streaming in 

 translocation, 126, 589; osmotic pres- 

 sure of substances in cell-sap, 142 ; 

 osmotic values, 145, 146; permeability 



