INDEX. 



329 



culating protoplasm, 18; ex- 

 cess of on assimilation, 26 



Carpinus, horizontal branches of, 

 196 



Carum carvi, roots of, 136 



Caspary on frost affecting curva- 

 ture of branches, 180 



Cellulose, 293; estimated in ex- 

 periments, 312, 321, 322 ; action 

 of dilute acids on, 290 



Cell -walls, permeability of by air 

 when dry and wet, 88 



Centaurea, irritable stamens of, 212 



Centrifugal apparatus, Cambridge 

 Scientific Instrument Company, 

 169 



Chamberlain on root-pressure, 

 75 n., 77 



Cheiranthus, for water-culture, 61 



Chelidonium, stomata of, 106 



Chemotaxis, 214 ; of bacteria, 

 216 ; of pollen tubes, 216 



Chloral hydrate, used to make 

 leaves transparent, 22 



Chlorine, estimation of in ash, 299 



Chloroform, effect of on assimila- 

 tion, 38; on circulating proto- 

 plasm, 19; on stamens of Ber- 

 beris of, 210 ; poisonous effect 

 on Oxalis, 19 ; use of in pre- 

 serving solutions, 247 



Chlorophyll, appearance in etio- 

 lated plants of, 54 ; effect of 

 acid on, 51 ; of copper on, 51, 

 52 ; of light on solution of, 50 ; 

 of warmth on appearance of, 55 ; 

 iron necessary for production of, 

 56 ; oxygen necessary for pro- 

 duction of, 55 ; reactions of, 50 ; 

 spectrum of, 52 



Chloroplasts, movement of, 214 



Chlorosis, 56 



Chrysanthemum, warmth produced 



by respiration of, 12 n. 

 Ciesielski on decapitation of roots, 

 173 ; on roots curving when 

 wetted on one side, 178 

 Circulation of protoplasm, effect of 



heat on, 16, see Protoplasm 

 Circumnutation, 227; of twining 



plants, 229 

 Clover, see Trifoliura 



Cobalt method of observing stoma- 

 tal transpiration, 104 



Cocoa-butter, used for injection of 

 vessels, 92 



Coefficient, isotonic, 128 



Compression, effect on transpira- 

 tion current of, 92 



Copper, effect on chlorophyll so- 

 lution of, 52 



Cornus sanguinea, lenticels of, 110 



Corylus, horizontal branches of, 

 196 



Cotyledon, bloom of, 111 



Coupin on imbibition, 116 n. 



Crocus, etiolated, 57; opening 

 and closing in response to 

 changes in temperature, 219 



Cross-cuts, effect on transpiration 

 of, 94 



Cucurbita, for assimilation experi- 

 ments, 31 ; peg or heel of, be- 

 haviour on klinostat, 192 



Culture without C0 2 , 28 



Curcuma rubricaulis, for osmotic 

 experiment, 129 



Curvature due to injury, contact Ac., 

 173 ; geotropic, 164 ; heliotropic, 

 180; region of coincides with 

 region of growth, 164, 165 ; 

 sudden, of apogeotropic shoots, 

 171 



Curvatures due to growth, 163 ; 

 produced by dividing turgescent 

 tissues, 140, 141 



Cyclometer, 137 



Cynara, irritable stamens, 212 n. 



Czapek, on localization of geotropic 

 sensitiveness, 174 



Dahlia, etiolated, 57 



Daisy, see Bellis 



Dandelion flowers, warmth pro- 

 duced by respiration of, 11. See 

 Taraxacum 



Darkness, effect of, on sensitiveness 

 of Mimosa, 203 



Darwin, C., on civcumuutation, 

 227 ; on decapitation of roots, 

 173 ; on movements of Des- 

 modium, 232 ; on digestion of 

 Drosera, 72 n. ; references to 

 experiments on feeding Drosera, 



