INDEX 



319 



Vaucheria, 294, 295. 



Verbascum, 246. 



Verbena, 246. 



Verwom, on conditional control, xxv; General 

 Physiology, 139. 



Vesque, on absorption and transpiration, 124. 



Vessels, gas in, 132; movement of sap in, 134; 

 transmission of pressure in, 133; negative pres-^ 

 sure in, 98, 120, 121, 132. 



Vetch (see also Vicia)^ ig, 142, 144, 250. 



Vicia (see also Vetch), 95, 144, 147, 159, 201, 206, 

 219, 220, 246. 251. 



Vienna, 259, 260. 



Ville, on chlorophyll formation and soil fertility, 16. 



Vinegar, 211. 



Vines, on enzymes of Nepenthes, 37; on light and 

 leaf growth, 254; V. and Green, on proteins 

 oi Asparagus, 143, 



Vinogradskti, on nitrifying organisms, 46, 64; on 

 selective culture, 41; on sulphur bacteria, 47; 

 on iron bacteria, so ; on nitrifying organisms of 

 soil, 64; on nitrogen fixation by microorgan- 

 isms. 74; V. and Omelianskii, on nitrobacteria, 

 65- 



Viola, 81. 



Virulence, of bacteria, 167. 



Vitis, 219, 277. 



Vdchting, on light and leaf position, 247; on light 

 and development of cacti, 253; on light and 

 floral development, 261 ; on zygomorphy, 265 ; 

 on correlations, 269; on formation of tubers, 

 289 ; on sprouting of potato tubers, 289 ; on in- 

 duced rhizome formation, 290; Organbildung, 

 291; Transplantation, 297, 298; on symbiosis 

 of Helianthus annuus and H. tuberosus, 298. 



Volatile oils, 124. 



Volkens, on guttation, 128. 



Vorbrodt, on phosphorus compounds and phytin, 

 I59f 170. 



Voronezh, 89. 



Voss, on twining, 276. 



Votchal, on water transfer, i3if I33. 134; on solanin 

 in plants, i67. 



Votchall, see Votchal. 



Vries, de, on turgidity, isosmotic coefficients, etc., 

 106, 107, 108, no; on osmotic values of cell 

 sap, lis; on plasmolysis, etc., 113, 216; on proto- 

 plasmic streaming, iis; on root contraction, 

 221; on tendrils, 277. 



W 



Wagner, A., on leaves of alpine plants, 285. 



Wagner, P., fertilizer experiments of, 66, 69, 88. 



Wahl and Henius, Book of brewing, etc., 181, 



Walden, on osmotic membranes, 105. 



Walther, Krasnosselskii, Maksimov and Malchev- 

 skii, on hydrocyanic acid in bamboo, 164. 



Washburn, on osmotic pressure, etc., loi, 102, 104, 

 ■ no. 



Wasps, distributors of yeast, 181. 



Water, absorption of, 243, 244; importance of, 173- 

 174; in metabolism, 18, 75. 76, 174. i78, 187. 

 188, 197, 198, 203, 20s; in respiration, 197-198; 

 transfer of, 99. 121-122, 131, 133. 134; and 

 configuration, 236, 240; purification of, by sun- 

 shine, 262- 



Water-plants, 38. 



Water-pouches, 234, 235. 



Water-requirement, 125. 



Wax. 233. 



Weather, and gas in vessels, 132. 



Weber, on ash of etiolated leaves, 255. 



Weevers, on potassium in plants, 84 ; on cafEein and 

 theobromin. 161. 



Wehmer, on ash analyses, 83 ; on Mucor fermenta- 

 tion, x88; on oxalic acid in fungi, 173- 



Weighting of light values, 260. 



Weimarn, on colloids, 103. 



Weinzierl, on alpine cultures, 285. 



Weissberg, see Engler and W. 



West, on chlorophyll, 6; on non-chlorophyll pig- 

 ments, 21. 



Weyl, on proteins, 143. 



Wheat (see also Triticum), 17, 143, 144, 146, 157, 

 169. 173. 175. 201, 203, 207, 209, 251, 2S4. 294. 



Wheat rust, 80. 



Whitney and Cameron, on soil fertility, 93, 95. 



Wieland, on oxidation processes, 179, 188. 



Wieler, on bleeding, 128. 



Wiener, on iron in plants, 84- 



Wiesner, on chlorophyll formation, 14, is; on 

 transpiration, 123, 12s, 126; on descending 

 water stream, 238; on diffusion in plants, 99; 

 on light relations, 27, 244, 2S3» 256, 258, 259t 

 260; on geotropism, 262, 270; on circummuta- 

 tion, 279; on phototropism, 245, 249, 262, 279; 

 W. and Molisch, on gas movement in plants, 

 98. 



Wilfarth, see Hellriegel and W. 



WiUe, see Ville. 



Willow, 221, 222, 2S0, 291. 



Willstatter, on chlorophyll, 6, 7, 8, 13; W, and 

 Asahina, on chlorophyll derivatives, 12; W. 

 and Benz, on chlorophyll, 7, 9; W. and Escher, 

 on lycopin, 20 ; W, and Fritsche, on chlorophyll 

 derivatives. 11, 13; W. and Hocheder, on 

 chlorophyll derivatives, 8, 13 ; W. and Hug, on 

 chlorophyll, 6; W. and Isler, on chlorophylls 

 of different plants, 13 ; W., Mayer and Huni, on 

 phytol, 8; W. and Mieg, on yellow pigments, 

 19; W, and Pfannenstiel, on rhodophyllin, 13 ; 

 W. and Stoll, on chlorophyll, 6, 11, 13, 20; on 

 chlorophyllase, 8. 



Wilting, 36. 133, 243. 



Winkler, on gas analysis, 4* ^ 



Winogradsky, see Vinogradskii. 



Winterstein, on fungus cellulose, 171; on phos- 

 phatides, 168; W. and Hiestand, on phos- 

 phatides, 168; W. and Smolensk!, on phospha- 

 tides, 168; W. and Stegmann, on phosphatides, 

 168; W. and Trier, on alkaloids, 166. (See also 

 Schulze and W.) 



Witches brooms, 271, 272. 



Woburn Experimental Farm, 93. 



Wohler, on synthesis of urea, xxi. 



Wolff, on ash analyses, 82. 



Wolkoff and Mayer, on respiration, 190, 196. 



Wollny, on evaporation from soil, etc., 12S. 



Wood, air of, 120; strains in, 222; water movement 

 in, 121. 



Work, of plants, 178, 200. 



Wortmann, on respiration, 181; on growth, 216; in 

 root hairs, 240; on yeast in grape juice, 181, 182. 



