di LIFE MOVEMENTS IN PLANTS 



FKiUnE. PAGE. 



169. Geo-electric response of the scape of Uriclis . . 453 



170. Mechanical and electric response to indirect stimula- 



tion 1 • • ■ 463 



171. Diagrammatic representation of mechanical and elec- 



tric response of root . . . . . . 464 



172. Diagrammatic representation of geo-electric response of 



root-tip ......... 469 



173. Diagrammatic representation of geo-eleotric response 



of growing region of root . . . . . 471 



174. Diagrammatic representation of the geo-perceptive 



layer ......... 480 



175. The Electric Probe 483 



176. Transverse section showing continuous geo-perceptive 



layer {Bri/ophyllum) ...... 48H 



177. Curve of geo-electric excitation in different layei-s 



of Nymphcea ... ... . .497 



178. Curve of geo-electric excitation in Bryophylluiii . 497 



179. Diagram of arrangement of geotropic torsional 



response ......... 503 



180. Additive effect of stimulus of gravity and light . 505 



181. Algebraical summation of geotropic aud phototropic 



actions ......... 505 



182. Comparative balancing effects of white and red 



liglits 506 



183. Effect of coal gas on photo-geotropic balance . 507 



184. Diagram of magnetic balance . . . . . 511 



185. Effect of variation of light on phototropic equilibrium 512 



186. Effect of variation of tempeiature on geotropic 



torsion . . . . . . . • • 514 



187. Simultaneous records of variation of temperature, on 



up and down movement, and of torsion of the leaf 



of Mimosa ' ' ' ' . , . . ol8 



188. Arrest of pulsatory movement of leaflet of Desino- 



dium gyrans by light ...... 528 



189. Effect of unilateral light oxi hyponastic movement . 529 



190. The Nyctitropic Recorder 537 



191. Effect of sudden darkness on leaflet of Cada alata . 539 



