584 



INDEX. 



Melilotus parviflora, sleep of iftves, 

 347 



Petitjiirrreaiia, leaves ezposed 



at night, 291, 296 



, sleep of leaves, 3i7 



secundiflora, sleep of leaves, 



347 



suaveolens, leaves exposed at 



night, 291 



, sleep of leaves, 347 



sulcata, sleep of leaves, 347 



Taurica, leaves exposed at 



night, 291 



, sleep of leaves, 347, 415 



Methods of observation, 6 



Mimosa albida, ootyledouB vertical 



at night, 116 



, not sensitive to contact, 127 



, sleep of cotyledons, 308 



, rudimentary leaflets, 364 



, nyctitropic movements of 



leaves, 379, 380 

 — '—, circumnutatiou of the main 



petiole of yomig leaf, 381 

 , torsion, or rotation of loaves 



and leaflets, 400 



, first true leaf, 416 



-• , effect of bright sunshine on 



basal leaflets, 445 



marginata, nyctitropic move- 

 ments of leaflets, 381 



pudica, movement ' of ooty- 



ledoLis, 105 



, rupture of the seed-coats, 



105 

 , circumnutatiou of cotyledons, 



109 



, pulvini of, 113, 115 



, cotyledons vertical at night, 



116 

 , hardly sensitive to contact, 



127 

 , effect of exposure at night , 



293 

 , nocturnal movement of leaves, 



297 



, sleep of cotyledons, 308 



, circumnutatiou and nycti- 

 tropic movement of main petiol 3, 



374-378 

 , of leaflela, 378 



Mimosa albida, circumnutatlon and 

 nyctitropic movement of pinuie, 

 402 



, number of ellipses describe-i> 



in given time, 406 



, effect of bright sunshine on 



leaflets, 446 



Mirabilis jalapa and longiflora-, 

 nocturnal movements of cotyle- 

 dons, 307 



, nyctitropic movement of 



leaves, 387 



Mohl, on heliotropism in ten- 

 drils, stems, and twining plants, 

 451 



Momentum-like movement, the ac- 

 cumulated effects of apogeo- 

 tropi^m, 508 



Monocotyledons, sleep of leaves, 

 389 



Monotropa hypopitys, mode of 

 breaking through the ground, 86 



Morren, on the movements of 

 stamens of Spaimannia and 

 Cereus, 226 



Miiller, Fritz, on Cassia tora, 34 ; 

 on the circumnutatiou of Linum 

 usitatisdmum, 203 ; mpvements 

 of the flower-stems of an Alisma, 

 226 



Mutisia clematis, movement of 

 leaves, 246 



, leaves not heliotropio, 451 



N. 



Natural selection in connection 

 witli geotropism, heliotropism, 

 &c., 570 



Nephrodium molle, circumnutatlon 

 of very young frond, 66 



, of older frond, 257 



, slight movement of fronda 



509 



Neptunia oleracea, sensitiveness to 

 contact, 128 



, nyctitropic movement of leaf- 

 lets, 374 



, of pinna), 402 



