Platinum chloride, action on Drosera, 186

Poison of cobra and adder, their action on Drosera, 206

Pollen, its digestion by Drosera, 117

Polypompholyx, structure of, 445

Potassium, salts of, inducing aggregation in Drosera, 50 —­, —­, action on Drosera, 179 —­ phosphate, not decomposed by Drosera, 180, 187

Price, Mr. John, on Utricularia, 429

Primula sinensis, glandular hairs of, 348 —­, number of glandular hairs of, 355

Protoplasm, aggregation of, in Drosera, 38 —­, —­, in Drosera, caused by small doses of carbonate of ammonia, 145 —­, —­, in Drosera, a reflex action, 242 —­ aggregated, re-dissolution of, 53 —­, aggregation of, in various species of Drosera, 278 —­, —­, in Dionaea, 290, 300 —­, —­, in Drosophyllum, 337, 339 —­, —­, in Pinguicula, 370, 389 —­, —­, in Utricularia, 411, 415, 429, 430, 436

Q.

Quinine, salts of, action on Drosera, 201

R.

Rain-water, amount of ammonia in, 172

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

Sanderson, Burdon, on coagulation of albumen from heat, 74 —­, on acids replacing hydrochloric in digestion, 89 —­, on the digestion of fibrous basis of bone, 108 —­, —­ of gluten, 118 —­, —­ of globulin, 120 —­, —­ of chlorophyll, 126 —­, on different effect of sodium and potassium on animals, 187 —­, on electric currents in Dionaea, 318

Saxifraga umbrosa, glandular hairs of, 345 [page 461]

Schiff—­turpentine.

Schiff, on hydrochloric acid dissolving coagulated albumen, 86 —­, on manner of digestion of albumen, 93 —­, on changes in meat during digestion, 99 —­, on the coagulation of milk, 114 —­, on the digestion of casein, 116 —­, —­ of mucus, 123 —­, on peptogenes, 129

Schloesing, on absorption of nitrogen by Nicotiana, 352

Scott, Mr., on Drosera, 1

Secretion of Drosera, general account of, 13 —­ —­, its antiseptic power, 15 —­ —­, becomes acid from excitement, 86 —­ —­, nature of its ferment, 94, 97 —­ by Dionaea, 295 —­ by Drosophyllum, 335 —­ by Pinguicula, 381

Seeds, living, acted on by Drosera, 127 —­, —­, acted on by Pinguicula, 385, 390