588 



INDEX. 



QUERCTTS. 



Quercus virens, manner of germina- 

 tion, 85, 657 



Kadiation at night, effect of, on 

 leaves, 284-286 



Eadiclee, manner in which they 

 penetrate Ihe ground. 69-77 ; eir- 

 cumnutation of, 69 ; experiments 

 with split sticks, 74 ; with 

 wooden pincers, 75 ; sensitiveness 

 of apex to contact and other irri- 

 tants, 129 ; of Vicia faha, 132- 

 158; various experiments, 135- 

 140 ; summary of results, 143-151; 

 power of an irritant on, com- 

 pared with geotropism, 151-154 ; 

 sensitiveness of tip to moist 

 air, 180 ; with greased tips, 

 185 ; effect of killing or injuring 

 the primary radicle, 187-191 ; 

 curvature of, 193; affected by 

 moisture, 198 ; tip alone sensitive 

 to geotropism, 540 ; protrusion 

 and circumnntation in a germina- 

 ting seed, 548; tip highly sen- 

 sitive, 550 ; the tip acts like the 

 brain of one of the lower animals, 

 573 



, secondary, sensitiveness of 



the tips in the bean, 151; become 

 vertically geotropic, 186-191 



Ramey on the movements of the 

 cotyledons of Mimosa pudica, 

 and Clianthus Dampieri at night, 

 297 



Banunculus Ficaria, mode of 

 breaking through the ground, 

 86,90 



, single cotyledon, 96 



, effect of lateral light, 484 



Haphanim saliva, sensitiveness of 

 apex of radicle, 171 



, sleep of cotyledons, 301 



Rattan, Mr., on the germination of 

 the seeds of Megarrhiza Califor- 

 nica, 82 



Relation between oircumuutation 

 and heliotropism, 435 



Beseda odorata, hypocotyl of seed- 

 ling slightly heliotropip, 454 



Reversion, due to mutilation, 1 90 



Bhipsalis cctssytTia, rudimentary eo» 

 tyledons, 97 



Bieinus Borioniensis, oircumnuta- 

 tion of arched hypocotyl, 53 



Bdbinia, effect of bright sunshine 

 on its leaves, 445 



pseudo-acacia, leaflets vertical 



at night, 355 



Eodier, M., on the movements of 

 CeratophyUum demtrsum, 211 



Royer, Cii., on the sleep-movements 



. of plants, 281, n. ; on the sleep of 

 leaves, 318 : the leaves of Medi- 

 cago maculata, 845 ; on Wistaria 

 Sinensis, 354 



Bubus idaeus (hybrid) circumnnta- 

 tion of stem, 205 



, apogeotropio movement of 



stem, 498 



Euiz and Pavon, on Forlieria hy- 

 grometrica, 336 



S. 



Sachs on " revolving nutation," 1 ; 

 intimate connection between tur- 

 geseence and growth, 2, n. ; coty- 

 ledon of the onion, 59 ; adapta- 

 tion of root-hairs, 69 ; the move- 

 ment of the radicle, 70, 72, 73 ; 

 movement in the hypoootyls of 

 the bean, &c., 91 ; sensitiveness 

 of radicles, 131, 145, 198; sensi- 

 tiveness of the primary radicle 

 in the bean, 155; in the com- 

 mon pea, 156 ; effect of moist 

 air, 180; of killing or injuring 

 the primary radicle, 186, 187 ; 

 circumnntation of flower-stems, 

 225 ; epinasty, 268 ; movemenia 

 of leaflets of Trifolium incar- 

 natum, 350; action of light in 

 modifying the periodic move- 

 ments of leaves, 418 ; on geotro- 

 pism and heliotropism, 436, n.\ 

 on Tropvolum majtis, 458 ■ 



