3§0 



INDEX. 



252; general characters of, 249 

 -251; removal of from solutions, 

 253; whether glucosides or not, 

 255 



Taraxacum, nitrates in, 60; for 

 osmotic experiments, 114; tan- 

 gential shrinking of tissues of in 

 water, 124 



Taxus, development of buds of, 

 181 



Tendrils, sensitive to contact, 184 ; 

 not sensitive to contact of gela- 

 tine, 185; injection of with 

 water, 185 



Tension, and anisotropism, 110 



Tensions, of tissues, 121 ; de- 

 monstrated by splitting shoots, 

 roots, &c., 128, 129; transverse, 

 123, 124 



Terpenes, in extracts, 224; see 

 also Oils 



Thymol, use of, 229 



Tilia, branches of curving in frost, 

 164 ; horizontal branches of, 

 180 



Timiriazeff, on printing the spec- 

 trum in starch, 21 



Tissues, imperfect elasticity of, 125 ; 

 tensions of, 121 



ToUens on Carbohydrates, 258 



Torsion of intemodes, 180 



Tracheids, permeability of by air, 80 



Tradescantla, circulating proto- 

 plasm in, 12; for osmotic ex- 

 periment, 117 



Translocation of carbohydrates 

 tested by iodine method, 28; 

 loss of weight during, 28 



Transpiration, 72; methods of 

 estimating absorption during, 72, 

 76 ; and absorption, by cut branch 

 compared, 90; affected by bloom 

 on leaves, 99; by light, 78; 

 compared with evaporation of 

 water, 89; -current affected by 

 incisions, 85 ; by compression, 

 84 ; effected by sunshine on, 77; by 

 wind, 77 ; loss of weight during, 

 88 ; stomatal, 98, 94 



Transverse helio and geotropism, 

 see Diahelio and -geotropism 



Traube's artificial cell. 111 



Trianea, stomata of, 98 



Trifolium, autonomous movements 

 of, 212; effect of prolonged 

 darkness on, 204; nyotitropio 

 movements, 203; used in ex- 

 periments on enzymes, 288 



Trimble on Tannins, 248 



TropsBolum, used in experiments 

 on iodine method, 17, 21, 26; 

 on sugars, 270 



Tulip, opening and closing in re- 

 sponse to changes of tempera- 

 ture, 201 



Turgescence and growth, 132 



Turgescent shoot, rigidity of, 127 



Turgor, 113 



Twining plants, 211 



Ulmus campestris, oxalate in, 58 ; 



horizontal branches of, 180 

 Uredinese, culture of, 63 



Valerian, used in experiments on 

 growth, 134; on growth-curva- 

 ture, 151 



Variegated leaves tested for starch, 

 19 



Varnish, photographic, for marking 

 growing parts, 132 



Velten, his hot-stage, 13 



Veronica, diaheliotropism of, 168 



Vessels, blocking of, by cocoa- 

 butter, 83; by particles sus- 

 pended in water, 79, 80 



Vines, on epinasty, 182 n. ; on 

 use of microscope for growth 

 measurements, 189 n. ; on 

 growth of Phycomyces in light 

 and darkness, 148 



Voohting, on diageotropic flowers, 

 178; on diaheliotropism, 174; 

 on rectipetaUty, 175 



Von Hohnel, see Hohnel 



Waage, on Phloroglucin, 251 

 Wanklyn's albuminoid ammonia 



process applied to proteids, etc. 



286 

 Ward, Marshall, on hanging-drop 



culture, 63 n. 



