588 



INDEX. 



QUERCrS. 



Qucrcus virena, manner of germina- 

 tion, 85, 557 



Eailiation at night, effect of, on 

 1' aves, 284-286 



Radicles, manner in which they 

 penetrate ihe ground. 69-77 ; cir- 

 curanutation of, 69 ; experiments 

 with split sticks, 74 ; with 

 wooden pincers, 75 ; sensitiveness 

 of apex to contact and other irri- 

 tants, 129 ; of Vieia /aba, 132- 

 158; various experiments, 135- 

 140 ; summary of results, 143-151; 

 power of an irritant on, com- 

 pared with geotnipism, 151-154 ; 

 senbitiveness 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 geotropisra, 540 ; protrusion 

 and oiroumnutation 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, 154; become 

 vertically geotropie, 186-191 



Ramey on the movements of the 

 cotyledons of Mimosa pudioa, 

 and Clianthus Dampieri at night, 

 297 



Ranunculus Ficaria, mcide of 

 breaking through the gruund, 

 86,90 



, single cotyledon, 96 



— — •, effect of lateral light, 484 



llnphanus saliva, s nsiti\encss of 

 apex of radiile, 171 



, sleep of cotyledons, 301 



Rattan, Mr., on the gi-rmination of 

 the seeds of Megarrhiza Califor- 

 7iica, 82 



Belaiion between circumiiutation 

 and heliotropism, 435 



Beseda odorata, liypocotyl of seed- 

 ling slightly heliotropio, 454 



Reversion, due to mutilation, 1 90 



Bhipsalis cassytha, rudimentary co- 

 tyledons, 97 



Rioiniis Boriordensis, circumnuta- 

 lion of arched hypocotyl, 53 



Bubinia, effect of bright sunshine 

 on its leaves, 445 



pseudo-acacia, leaflets vertical 



at night, 355 



Eodier, M., on the movements of 

 CeratophyUum demersum, 211 



Royer, Cli., on the sleep-movements 

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

 leaves, 318 ; the leaves of Medi- 

 cago maculata, 345 ; on Wistaria 

 Sinensis, 354 



Mubus idaus (hybrid) circumnuta- 

 tion of stem, 205 



, apogeotropio movement of 



stem, 498 



Kuiz and Pavon, on Porlieria liy- 

 grometrica, 336 



S. 



Sachs on " revolving nutation," 1 ; 

 intimate connection between tur- 

 gescenoe 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 injuriiig 

 the primary radicle, 186, 187 ; 

 circumnutation of flower-stems, 

 225; epinasty, 268; movemenu 

 of leaflets of TrifoUtim incar- 

 natum, 350; action of light in 

 modifying the periodic move- 

 ments of leaves, 418 ; on geotro- 

 pisra and heliotropism, 436, n ; 

 on Trop tolum irutjvs, 4.58 ' 



