movements of young and older leaves, 400 —­ florida, cotyledons sensitive to contact, 126 —­, sleep of cotyledons, 308 —­ glauca, cotyledons sensitive to contact, 126 —­, sleep of cotyledons, 308 —­ laevigata, effect of radiation on leaves, 289, n. —­ mimosoides, movement of cotyledons. 116 —­, sensitiveness of, 126 —­, sleep of, 308 —­, nyctitropic movement of leaves, 372 —­, effect of bright sunshine on cotyledons, 446 —­ neglecta, movements of, 117 —­, effect of light, 124 —­, sensitiveness of cotyledons, 126 —­ nodosa, non-sensitive cotyledons, 126 —­, do not rise at night, 308 —­ pubescens, non-sensitive cotyledons, 126 [page 577]

CASSIA—­CRINUM

Cassia pubescens, uninjured by exposure at night, 293 —­, sleep of cotyledons, 308 —­, nyctitropic movement of leaves, 371 —­, circumnutating movement of leaves, 372 —­, nyctitropic movement of petioles, 400 —­, diameter of plant at night, 402 —­ sp. (?) movement of cotyledons, 116 —­ tora, circumnutation of cotyledons and hypocotyls, 34, 35, 109, 308 —­, effect of light, 124, 125 —­, sensitiveness to contact, 125 —­, heliotropic movement and circumnutation of hypocotyl, 431 —­, hypocotyl of seedling slightly heliotropic, 454 —­, apogeotropic movement of old hypocotyl, 497 —­, movement of hypocotyl of young seedling, 510

Caustic (nitrate of silver), effect of, on radicle of bean, 150, 156; on the common pea, 160.

Cells, table of the measurement of, in the pulvini of Oxalis corniculata, 120; changes in, 547

Centrosema, 365

Ceratophyllum demersum, movements of stem, 211

Cereus Landbeckii, its rudimentary cotyledons, 97
—­ speciossimus, circumnutation of stem, 206, 207

Cerinthe major, circumnutation of hypocotyl, 49 —­, of cotyledons, 49 —­, ellipses described by hypocotyls when erect, 107 —­ effect of darkness, 124

Chatin, M., on Pinus Nordmanniana, 389

Chenopodium album, sleep of leaves but not of cotyledons, 314, 319

Chenopodium album, movement of leaves, 387

Chlorophyll injured by bright light, 446

Ciesielski, on the sensitiveness of the tip of the radicles, 4, 523

Circumnutation, meaning explained, 1; modified, 263-279; and heliotropism, relation between, 435; of paramount importance to every plant, 547

Cissus discolor, circumnutation of leaf, 233

Citrus aurantium, circumnutation of epicotyl, 28
—­, unequal cotyledons, 95

Clianthus Dampieri, nocturnal movement of leaves, 297

Coboea scandens, circumnutation of, 270

Cohn, on the water secreted by Lathraea squamaria, 86, n.; on the movement of leaflets of Oxalis, 447

Colutea arborea, nocturnal movement of leaflets, 355

Coniferae, circumnutation of, 211
Coronilla rosea, leaflets asleep, 355

Corylus avellana, circumnutation of young shoot, emitted from the epicotyl, 55, 56 —­, arched epicotyl, 77