Nicotine, action on Drosera, 203
Nitric ether, action on Drosera, 220
Nitschke, Dr., references to his papers on Drosera, 1 —, on sensitiveness of backs of leaves of Drosera, 231 —, on direction of inflected tentacles in Drosera, 244 —, on Aldrovanda, 322
Nourishment, various means of, by plants, 452
Nuttall, Dr., on re-expansion of Dionaea, 318
O.
Odour of pepsin, emitted from leaves of Drosera, 88
Oil, olive, action of, on Drosera, 78, 126
Oliver, Prof., on Utricularia, 432, 441-446
P.