280 



INDEX 



Darwin, Fr., 96 ; influence of light on 

 growth of roots, 96. 



and Bateson, 20. 



Dassonville, 118, 123. 



Davenport, 77. 



Davy, 112. 



Death, causes of, 219, 224-43; production 

 of, by cold, 244 ; signs of, 224, 235. 



Debski, 148. 



Deherain and Demoussy, 260. 



Delage, 40, 167, 186, 188, 191, 194. 



Demoor, 41 ; on nuclear division, 40. 



Dendrocalamus, rapidity of growth in, 15. 



Denksch, 95. 



Derbesia, 57 ; bursting of cells of, in fresh 

 water, 119. 



Desiccation, 249 ; causes of fatal action of, 

 253 ; influence of, on action of poisons, 

 261, 262 ; - - on resistance to cold, 234 ; 

 to heat, 70, 229 ; - on resting 

 periods, 210; relation of, to death by 

 cold, 245. 



Desiccator, vitality of spores in, 251. 



Desmids, nuclear fragmentation in, 41. 



Determinants, 187. 



Detlefsen, 54, 63, 109. 



Detmer, 84, 113, 208, 235. 



Devaux, 122, 260. 



Dewar and M c Kendrick, 238. 



Diaphragms, importance of, 53. 



Diatoms, influence of cold on, 238. 



Dicranum scoparium, resistance of, to heat, 

 229. 



Dictamnus fraxinella, influence of desic- 

 cation on seeds of, 254. 



Dictiophora phalloidea^ rate of growth of, 



17- 



Diels, 123. 



Dienert, 193. 



Dieudonne', 247, 249, 262 ; on accommoda- 

 tion to cold, 80. 



Differentiation, mechanical aids to, in tis- 

 sues, 44. 



Dingier, 15. 



Dionaea, transmission of stimuli in, 186. 



Dioscorea Batatas, influence of darkness 

 on, 87. 



Disinfecting power, 274. 



Disks, attaching, influence of contact on 

 formation of, 129. 



Dissociation, influence of, on poisonous 

 action, 272-4. 



Division at right angles, law of, 42. 



Dixon, 134. 

 - and Joly, 242. 



Dormancy, 219. 



Dorsiventrality, induction of, 149. 



Dracaena, strains in branches of, 63. 



Driesch, 3, 40, 148, 166, 170, 188. 



Drosera, transmission of stimuli in, 185. 



Drought, periodicity due to, 208. 



Drude, 18, 203, 204 206, 212, 232. 



Dry-rigor, 69. 



Dubourg, 193. 



Duchartre, 201, 205 ; on periodicity of 



growth, 20 1. 



Dufour, 88 ; on sub-cooling, 244. 

 Duggar, 112, 253. 

 Duhamel, 21, 66, 67, 109, 207, 232, 235, 



236 ; on strains and curvatures, 64. 

 Dutrochet, 60, 250; on origin of internal 



stresses, 64; on stimuli, 75. 

 Duvalia, induction of dorsiventrality in, 

 . 150. 



Eberdt, 122. 



Eberhardt, 123. 



Ebermayer, 16. 



Eckstein, 172. 



Edelweiss, causes of shape of, loo, 101. 



Edwards, on temperature for growth, 82. 



- and Colin, 82, 231, 237. 

 Ehrenberg, 77. 

 Eichholz, 57. 



Eichhornia, influence of desiccation on seeds 



of, 210. 

 Eidam, 5. 

 Elasticity, of cell-wall, 54 ; in plants, 50 



seq. ; relation of, to micellar structure, 



57 ; of tissues, 57 seq. 

 Elastic limit in wood and collenchyma, 56. 

 Electrical radiations, influence of, on plants, 



105. 



Electric currents, influence of, on trans- 

 mission of stimuli, 182. 

 Electricity, influence of, on growth, 106. 

 Electrons, 25. 

 Elfving, 90, 102, 103, in, 113, 128, 194,247 ; 



on influence of electricity on growth, 



106, 107 ; - - inversion on growth, no. 

 Elm, sympodia of, 149. 

 Elodea, elongation of, in darkness, 93 ; 



position of leaf-primordia of, 143. 

 Embryonic cells, 146, 148; growth in size 



of, 5 ; influence of cessation of growth 



on, 223 ; plasmolysis of, 32. 



plasma, 4. 



- tissues, distribution of, 4. 



and somatic cells, distinction between, 6. 

 Endocarpon, influence of light on shape of, 



154. 



Endodermis, elasticity of, 55. 



Energy of growth, 16. 



Engelmann, 230. 



Ensch, 117. 



Enzymes, destruction of, by cold, 239. 



Epidendrum floribundum, minimum tem- 

 perature for, 233. 



Epidermis, regeneration of, 169 ; strains in, 

 65 ; tensions in, 61. 



Epigenesis, iSS. 



Epitobium august if oliitm, dorsiventrality 

 . of, 153. 



Epinasty, definition of, 73. 



Episcia bicolor, influence of cold on, 233. 



Epitrophy, induction of, no. 



