340 



INDEX. 



Tropseolum, used in experiments 

 on iodine method, 21, 25, 29 ; 

 on sugars, 288 



True, on growth in salt solution, 

 144 n. 



Tschirch, on action of copper on 

 chlorophyll, 52 



Tulip, opening and closing in re- 

 sponse to changes of tempera- 

 ture, 219 



Turgescence and growth, 132 



Tnrgescent shoot, rigidity of, 139 



Turgor, 125 



Twining plants, 229 



Ulmus carnpestris, oxalate in, 66 ; 



horizontal branches of, 196 

 Uredineae, culture of, 70 



Valerian, used in experiments on 

 growth, 147; on growth-curva- 

 ture, 164 



Variegated leaves tested for starch, 

 23 



Varnish, photographic, for marking 

 growing parts, 144 



Velteu, his hot-stage, 17 



Veronica, diaheliotropisin of, 184 



Vessels, blocking of, by cocoa- 

 butter, 92 ; by particles sus- 

 pended in water, 86, 87 



Vincetoxicum, pollen offorchemo- 

 taxis, 218 



Vines, on epinasty, 198 n. ; on 

 use of microscope for growth 

 measurements, 152 n. ; on 

 growth of Phycomyces in light 

 and darkness, 161 



Vochting, on diageotropic flowers, 

 194 ; on diaheliotropism, 189 ; 

 on rectipetality, 191 



Von Hohnel. see Hohnel 



Vries, see de Vries 



Waage, on Phloroglucin, 269 

 Wanklyn's albuminoid ammonia 



process applied to proteids, etc. 



254 

 Ward, Marshall, on hanging-drop 



culture, 70 n. 

 Water, absorbed by dead roots, 78 ; 



absorption of, by transpiring 

 plant, 79 ; -culture, 58 ; ex- 

 trusion under pressure of drops 

 of, 78 ; free from C0 2 , appara- 

 tus for preparing, 28; use of 

 in extraction, 243, 245 



Water-cress, used in De Saussure's 

 experiment, 74 



Water-plants, culture of without 

 C0 2 , 28; evolution of gas by, 35 



Wax-mixture, 3n. 



Weigelia, torsion of internodes in, 

 196 



Weight, gain of, in assimilating 

 leaves, 31 



Wheat, used in experiments on 

 starch, 294 ; on phosphates, 302 



Wiesner, on appearance of chloro- 

 phyll, 54 n. ; on the effect of 

 light on chlorophyll, 51 n. ; on 

 heliotropism, 181 n. 



Wind, effect of, on transpiration, 84 



Winkler-Hempel, method of gas- 

 analysis, 6, 44 



Withering, effect of on stomata, 

 106 ; mercury-pressure produc- 

 ing recovery from, 90 



Wolkoff, on effect of light on as- 

 similation, 37 



Wood, area of, greater than needed 

 for transpiration current, 93 ; 

 nitration of emulsion through, 

 91 ; injection of, by cocoa- 

 butter, 92 ; permeability of, by 

 air and water, 88, 89 ; swelling 

 against a weight, 118 ; young, 

 permeability of, by water, 88 



Wortmann, on light affecting nu- 

 tation of epicotyls, 199 ; on 

 intramolecular respiration, 10 ; 

 on water-culture, 59 u. 



Yeast, used in experiments on 



enzymes, 306, 308 

 Yew, development of buds of, 197 



Zea, stomata of, 106 

 Zirnmermann, on the diphenylamiii 



reaction for nitrates, 67 n. 

 Zopf, nutritive solutions fcM- fungi, 



68 n. 



CAMBHIDOE : PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS. 



