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