INDEX 



631 



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 ; on 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 tracheal 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, 221, 227, 

 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, 4/8, 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, 1 88. 

 - u. Pacher, 237 ; transpiration at low 



temperatures, 246. 

 Wigand, 495. 



u. Schell, on tannin as plastic product, 



493- 



Wilfarth, 398. 



Wilhelm, 162, 190. 



Wille, 118, 160, 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.j, 586. 



(G.), 430. 



u. Zimmermann, 391. 



