Chloroform, effects of, on Drosera, 217 —­, —­, on Dionaea, 304

Chlorophyll, grains of, in living plants, digested by Drosera, 126 —­, pure, not digested by Drosera, 125

Chondrin, its digestion by Drosera, 112

Chromic acid, action on Drosera, 185

Cloves, oil of, action on Drosera, 212

Cobalt chloride, action on Drosera, 186

Cobra poison, action on Drosera, 206

Cohn, Prof., on Aldrovanda, 321 —­, on contractile tissues in plants, 364 —­, on movements of stamens of Compositae, 256 —­, on Utricularia, 395

Colchicine, action on Drosera, 204

Copper chloride, action on Drosera, 185

Crystallin, its digestion by Drosera, 120

Curare, action on Drosera, 204

Curtis, Dr., on Dionaea, 301 [page 457]

Darwin—­fibrous.

D.

Darwin, Francis, on the effect of an induced galvanic current on
Drosera, 37 —­, on the digestion of grains of chlorophyll, 126 —­, on
Utricularia, 442

Delpino, on Aldrovanda, 321 —­, on Utricularia, 395

Dentine, its digestion by Drosera, 106

Digestion of various substances by Dionaea, 301 —­ —­ by Drosera, 85 —­ —­ by Drosophyllum, 339 —­ —­ by Pinguicula, 381 —­, origin of power of, 361

Digitaline, action on Drosera, 203

Dionaea muscipula, small size of roots, 286 —­, structure of leaves, 287 —­, sensitiveness of filaments, 289 —­, absorption by, 295 —­, secretion by, 295 —­, digestion by, 301 —­, effects on, of chloroform, 304 —­, manner of capturing insects, 305 —­, transmission of motor impulse, 313 —­, re-expansion of lobes, 318

Direction of inflected tentacles of Drosera, 243

Dohrn, Dr., on rhizocephalous crustaceans, 357

Donders, Prof., small amount of atropine affecting the iris of the dog, 172

Dragonfly caught by Drosera, 2

Drosera anglica, 278 —­ binata, vel dichotoma, 281 —­ capensis, 279 —­ filiformis, 281 —­ heterophylla, 284 —­ intermedia, 279

Drosera rotundifolia, structure of leaves, 4 —­, effects on, of nitrogenous fluids, 76 Drosera rotundifolia, effects of heat on, 66 —­, its power of digestion, 85 —­, backs of leaves not sensitive, 231 —­, transmission of motor impulse, 234 —­, general summary, 262 —­ spathulata, 280

Droseraceae, concluding remarks on, 355 —­, their sensitiveness compared with that of animals, 366

Drosophyllum, structure of leaves, 333 —­, secretion by, 334 —­, absorption by, 337 —­, digestion by, 339

E.

Enamel, its digestion by Drosera, 106

Erica tetralix, glandular hairs of, 351

Ether, effects of, on Drosera, 219 —­, —­, on Dionaea, 304

Euphorbia, process of aggregation in roots of, 63

Exosmose from backs of leaves of Drosera, 231

F.

Fat not digested by Drosera, 126