Ralfs, Mr., on Pinguicula, 390
Ransom, Dr., action of poisons on the yolk of eggs, 225
Re-expansion of headless tentacles of Drosera, 229 — of tentacles of Drosera, 260 — of Dionaea, 318
Roots of Drosera, 18 — of Drosera, process of aggregation in, 63 — of Drosera, absorb carbonate of ammonia, 141 — of Dionaea, 286 — of Drosophyllum, 332 — of Pinguicula, 369
Roridula, 342
Rubidium chloride, action on Drosera, 181
S.
Sachs, Prof., effects of heat on protoplasm, 66, 70 —, on the dissolution of proteid compounds in the tissues of plants, 362
Saliva, action on Drosera, 80
Salts and acids, various, effects of, on subsequent action of ammonia, 214