Gum, action of, on Drosera, 77
Gun-cotton, not digested by Drosera, 125
H.
Haematin, its digestion by Drosera, 121
Hairs, glandular, absorption by, 344 —, —, summary on, 353
Heat, inducing aggregation in Drosera, 53 —, effect of, on Drosera, 66 —, —, on Dionaea, 294, 319
Heckel, on state of stamens of Berberis after excitement, 43
Hofmeister, on pressure arresting movements of protoplasm, 61
Holland, Mr., on Utricularia, 395
Hooker, Dr., on carnivorous plants, 2 —, on power of digestion by Nepenthes, 97 —, history of observations on Dionaea, 286