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

Fayrer, Dr., on the nature of cobra poison, 206 --, on the action of cobra poison on animal protoplasm, 208 --, on cobra poison paralysing nerve centres, 224

Ferment, nature of, in secretion of Drosera, 94, 97

Fibrin, its digestion by Drosera, 100

Fibro-cartilage, its digestion by Drosera, 104

Fibro-elastic tissue, not digested by Drosera, 122

Fibrous basis of bone, its digestion by Drosera, 108 [page 458]

FLUIDS--LEAVES.

Fluids, nitrogenous, effects of, on Drosera, 76

Fournier, on acids causing movements in stamens of Berberis, 196

Frankland, Prof., on nature of acid in secretion of Drosera, 88

G.

Galvanism, current of, causing inflection of Drosera, 37 --, effects of, on Dionaea, 318

Gardner, Mr., on Utricularia nelumbifolia, 442

Gelatin, impure, action on Drosera, 80 --, pure, its digestion by Drosera, 110

Genlisea africana, 451 -- filiformis, 451

Genlisea ornata, structure of, 446 --, manner of capturing prey, 450

Glandular hairs, absorption by, 344 --, summary on, 353

Globulin, its digestion by Drosera, 120

Gluten, its digestion by Drosera, 117

Glycerine, inducing aggregation in Drosera, 52 --, action on Drosera, 212

Gold chloride, action on Drosera, 184

Gorup-Besanez on the presence of a solvent in seeds of the vetch, 362

Grass, decoction of, action on Drosera, 84

Gray, Asa, on the Droseraceae, 2

Groenland, on Drosera, 1, 5

Gum, action of, on Drosera, 77

Gun-cotton, not digested by Drosera, 125

H.

Haematin, its digestion by Drosera, 121

Hairs, glandular, absorption by, 344 --, --, summary on, 353

Heat, inducing aggregation in Drosera, 53 --, effect of, on Drosera, 66 --, --, on Dionaea, 294, 319

Heckel, on state of stamens of Berberis after excitement, 43

Hofmeister, on pressure arresting movements of protoplasm, 61

Holland, Mr., on Utricularia, 395

Hooker, Dr., on carnivorous plants, 2 --, on power of digestion by Nepenthes, 97 --, history of observations on Dionaea, 286

Hydrocyanic acid, effects of, on Dionaea, 305

Hyoscyamus, action on Drosera, 84, 206

I.

Iron chloride, action on Drosera, 185

Isinglass, solution of, action on Drosera, 80

J.

Charles Darwin

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