INDEX 



of protoplasm, 99; plasmolysis, 143; 

 reserve-materials of clover seeds, 594. 

 Vrolik, de, et de Vries, 541. 



Waage, 152, 491 ; on phloroglucin, 493. 



Wagner, 189, 405, 427, 431, 493 ; . n assimi- 

 lation of free nitrogen, 397, Fig. 60. 



Wahrlich, 113, 373. 



Wakker, 155, 320, 461. 



Walden, 103, 144; experiments with pre- 

 cipitation membranes, 94. 



Waldeyer, 41. 



Walliczek, 117, 478. 



Walser, 130. 



Walther, 352. 



Walz, 320. 



Warburg, 327, 328. 



Warming, 370. 



Wasserzug, 375. 



Water, amount exuded, 257, 258; conduct- 

 ing channels for, 213; excretion of, 

 252 ; conveyance of, in transpiring 

 plants, 210, sec. 34; influence of ex- 

 ternal conditions on percentage of, 229; 

 internal circulation of, 260; general 

 account of movements of, 207 ; oblique 

 transference of, 217; percentage of, in 

 different parts, 209 ; proofs of trans- 

 ference in trachea! cavities, 221 ; re- 

 versed current of, 212 ; storage of, 228; 

 transference of, through dead stems, 

 221. 



Water-columns, cohesion of, 224. 



Water-culture, 418-20; nutrient solutions 

 for, 420. 



Water-current, experiments with coloured 

 solutions, 214 ; influence of ringing on, 

 215 ; rapidity of, 219. 



Water-pores, 278-80, Figs. 38, 39. 



Water-transport, mechanism of, 220. 



Water-vapour, excretion of, 234. 



Way, 169. 



Weber, 352, 353, 357 ; influence of illumina- 

 tion on composition of ash, 129; law 

 of, 19. 



Wehmer, 327, 376, 381-3, 386, 390, 41 1, 427, 

 431, 462, 513, 527, 553, 585 ; on calcium 

 oxalate, 486 ; on Citromyces^ 485 ; in- 

 fluence of sugar on acidity of sap, 490. 



Weigelt, 430. 



Weigert, 495. 



Weismann, biophores of, 49 ; theory of 

 heredity, 57. 



Weiss, 1 1 8, 195, 586. 



Weisse, 189. 



Went, 156, 159; on vacuoles and osmotic 

 pressure, 137. 



u. Prinsen Geerligs, 406. 



Westermaier, 182, 210, 226, 228, 319. 

 - u. Ambronn, 216. 



Wettstein, 284, 366. 



Wevre, de, 379. 



Weyl, 331, 339. 



Wicke, 391, 494. 

 Wiedemann u. Liideking, 76. 

 Wiegleb, 418. 

 Wiegmann, 368, 418. 



- u. Polstorff, 130, 418, 430. 



Wieler, 155, 158, 189, 213, 216-9, 22I > 22 7> 

 255, 256, 260, 261, 266, 267, 270, 276-8, 

 542,571 ; on absorption of aniline dyes, 

 96 ; on bleeding, from isolated stem 

 and branches, 254 ; - induction of, 

 during winter rest, 265 ; influence 

 of cortex on bleeding of roots, 268 ; 



- of oxygen and chloroform, 264 ; 



- of concentrated nutrient solutions, 

 263 ; minimal temperatures for, 263 ; 

 permeability of protoplasm, 99 ; pressure 

 of exudation, 258, 259 ; growth in ab- 

 sence of oxygen, 570. 



Wiener, 496. 



Wiesner, 184-8, 198, 217, 235, 247, 248, 306, 



3i3> 3i6, 333-5. 368, 477, 478, 524, 582 : 

 on dermatosomes, 81 ; absorption by 

 leaves, 160 ; impermeability of dry cell- 

 walls to gases, 183; influence of dif- 

 ferent rays on formation of chlorophyll, 

 334 ; -- of feeble light, 358 ; molecular 

 structure, 79 ; permeation of cell-wall 

 by protoplasm, 485 ; plasomes, 49, 57 ; 

 plastids, 43 ; theory of function of 

 chlorophyll, 355. 



- u. Molisch, 116, 186 ; gaseous diffusion 



in capillaries, 188. 



- u. Pacher, 237 ; transpiration at low 



temperatures, 246. 

 Wigand, 495. 



- u. Schell, on tannin as plastic product, 



493- 



Wilfarth, 398. 



Wilhelm, 162, 190. 



Wille, 1 1 8, 1 60, 206, 379. 



Wilson, 282, 285, 438; excretion of nectar. 

 282, 284, 285 ; - - influence of light on, 

 285 ; respiratory ratio, 538. 



Winkelmann, 73, 76, 105, 126, 144, 185-7 ; 

 on diffusion through membranes, 92. 



Winkler, 314, 335. 



Winogradsky, 308, 400, 402, 411, 429, 431, 

 540; on iron-bacteria, 134; on nitrate 

 and nitrite bacteria, 361-3 ; nitrogen- 

 assimilating organisms, 393, 394 ; non- 

 formation of carbon dioxide by sulphur- 

 and nitro-bacteria, 526, 527. 



Winterstein, 476, 481. 



Wisselingh, v., 1 19 ; on fungal cellulose, 481. 



Wittlin, cellulose membranes of crystals, 482. 



Wladimiroff, 145. 



Wolff, 230, 391, 405, 410, 413, 414, 430, 437 ; 

 on accumulation of nitrates, 98 ; ash 

 analyses, 127-9; backward diffusion in 

 transpiring plants, 130. 



- (E.V 586. 

 (G.), 430. 



- u. Zimmermann, 391. 



