Watering, effect of, on Porlieria hygrometrica, 336-338
Wells, 'Essay on Dew,' 284, n.
Wiesner, Prof., on the circumnutation of the hypocotyl, 99, 100; on the hooked tip of climbing stems, 272; observations on the effect of bright sunshine on chlorophyll in leaves, 446; the effects of an intermittent light, 457; on a๋rial roots, 486; on special adaptations, 490
Wigandia, movement of leaves, 248
Williamson, Prof., on leaves of Drosera Capensis, 414
Wilson, Mr. A. S., on the movements of Swedish turnip leaves, 230, 298
Winkler on the protection of seedlings, 108
Wistaria Sinensis, leaflets depressed at night, 354 --, circumnutation with lateral light, 452
Z.
Zea mays, circumnutation of cotyledon, 64 Zea mays, geotropic movement of radicles, 65 --, sensitiveness of apex of radicle to contact, 177-179 --, secondary radicles, 179 --, heliotropic movements of seedling, 64, 421 --, tips of radicles cauterised, 539
Zukal, on the movements of Spirulina, 259, n.