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

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

Sensitiveness, localisation of, in Drosera, 229 — of Dionaea, 289 — of Pinguicula, 371

Silver nitrate, action on Drosera, 181

Sodium, salts of, action on Drosera, 176 —, —, inducing aggregation in Drosera, 50