Adder’s poison, action on Drosera, 206

Aggregation of protoplasm in Drosera, 38 — in Drosera induced by salts of ammonia, 43 — — caused by small doses of carbonate of ammonia, 145 — of protoplasm in Drosera, a reflex action, 242 — — in various species of Drosera, 278 — — in Dionaea, 290, 300

Aggregation of protoplasm in Drosophyllum, 337, 339 — — in Pinguicula, 370, 389 — — in Utricularia, 411, 415, 429, 430, 436

Albumen, digested by Drosera, 92 —, liquid, action on Drosera, 79

Alcohol, diluted, action of, on Drosera, 78, 216

Aldrovanda vesiculosa, 321 —, absorption and digestion by, 325 —, varieties of, 329

Algae, aggregation in fronds of, 65

Alkalies, arrest digestive process in Drosera, 94

Aluminium, salts of, action on Drosera, 184

Ammonia, amount of, in rain water, 172 —, carbonate, action on heated leaves of Drosera, 69 —, —, smallness of doses causing aggregation in Drosera, 145 —, —, its action on Drosera, 141 —, —, vapour of, absorbed by glands of Drosera, 142 —, —, smallness of doses causing inflection in Drosera, 145, 168 —, phosphate, smallness of doses causing inflection in Drosera, 153, 168 —, —, size of particles affecting Drosera, 173 —, nitrate, smallness of doses causing inflection in Drosera, 148, 168 —, salts of, action on Drosera, 136