| FIGURE. | | PAGE. |
| 93. | Arrangement for compensation of growth-movement by equal subsidence of plant-holder | [257] |
| 94. | Photograph of the Balanced Crescograph | [258] |
| 95. | Balanced Crescographic record | [260] |
| 96. | Record showing the effect of CO2 | [265] |
| 97. | Effect of ether and of chloroform | [266] |
| 98. | Diagrammatic representation of effects of Indirect and Direct stimulation | [275] |
| 99. | Tropic curvature of Crinum | [276] |
| 100. | Turgor variation caused by Indirect stimulation | [281] |
| 101. | Response of Mimosa leaf under transverse transmission of effect of electric stimulus | [282] |
| 102. | Diagrammatic representation of Indirect and Direct stimulation of tendril | [290] |
| 103. | Record by Method of Balance | [291] |
| 104. | Variation of growth under direct stimulation | [292] |
| 105. | Positive curvature of tendril of Cucurbita | [295] |
| 106. | Diagrammatic representation of effects of Indirect and Direct unilateral stimulation of tendril | [296] |
| 107. | Retardation of rate of growth under cathode | [303] |
| 108. | Acceleration of rate of growth under anode | [303] |
| 109. | Thermonastic and radionastic responses of petal of Zephyranthes | [308] |
| 110. | The Thermonastic Recorder | [309] |
| 111. | Negative thermonastic response of Nymphæa | [310] |
| 112. | Successive positive responses of the terminal leaflet of bean plant | [317] |
| 113. | Positive response and recovery under moderate phototropic stimulation | [318] |
| 114. | Persistent positive curvature under stronger stimulation | [318] |
| 115. | Immediate and after-effect of stimulus of light on growth | [320] |
| 116. | Latent period for photic stimulation | [324] |
| 117. | Effect of a single electric spark on growth | [325] |
| 118. | Responses of Mimosa leaf to light from above | [330] |
| 119. | Responses of Mimosa leaf to light from below | [330] |
| 120. | Record of effect of continuous application of light on upper half of pulvinus of Mimosa | [331] |
| 121. | Positive and negative phototropic response of Oryza | [335] |
| 122. | Leaf of Desmodium gyrans | [339] |
| 123. | The Oscillating Recorder | [340] |
| 124. | Tropic effect of increasing intensity of light on the leaflet of Desmodium gyrans | [341] |
| 125. | Tropic effect of increasing intensity of light on growing organ (Crinum) | [341] |
| 126. | The Collimator | [342] |
| 127. | Effect of angle of inclination of light on tropic curvature of pulvinated organ | [343] |
| 128. | Effect of angle of inclination on growth-curvature | [343] |
| 129. | Effect of increasing duration of exposure to light | [344] |
| 130. | Effect of continuous electric and photic stimulation on rate of growth | [348] |
| 131. | Characteristic curve of iron | [351] |
| 132. | Simple characteristic curve of phototropic reaction | [351] |
| 133. | Complete phototropic curve of pulvinated organ | [358] |
| 134. | Complete phototropic curve of growing organ | [359] |
| 135. | Arrangement for local application of light | [367] |
| 136. | Response of seedling of Setaria to light | [368] |
| 137. | Effect of application of light to the growing hypocotyl of Setaria | [370] |
| 138. | Response to direct and indirect photic stimulus | [373] |
| 139. | Diagrammatic representation of the effects of direct and indirect stimulation of Setaria | [375] |
| 140. | Photonastic curvature of creeping stem of Mimosa pudica | [380] |
| 141. | Positive phototropic response of Erythrina indica | [382] |
| 142. | Response of leaflet of Mimosa to light | [383] |
| 143. | Response of leaflet of Averrhoa to light | [383] |
| 144. | Diagrammatic representation of different types of phototropic response | [384] |
| 145. | Phototropic curvature of tendril of Passiflora | [392] |
| 146. | Effect of rise of temperature on phototropic curvature | [394] |
| 147. | After-effect of rise of temperature | [395] |
| 148. | Arrangement for record of torsional response | [399] |
| 149. | Record of torsional response of pulvinus of Mimosa pudica | [400] |
| 150. | Leaflets of Cassia alata | [404] |
| 151. | Positive response to thermal radiation | [413] |
| 152. | Record of positive, neutral, and reversed negative curvature under thermal radiation | [414] |
| 153. | Diagrammatic representation of the wireless system | [419] |
| 154. | Mechanical response of Mimosa leaf to electric waves | [420] |
| 155. | Electric response of Mimosa to Hertzian wave | [420] |
| 156. | Record of responses of growing organs to wireless stimulation | [422] |
| 157. | The Quadruplex Geotropic Recorder | [428] |
| 158. | Effect of alternate application of cold on upper and lower sides of the organ | [430] |
| 159. | Geotropic response of flower stalk of Tube-rose | [433] |
| 160. | Geotropic response of Tropæolum | [433] |
| 161. | The Complete Geotropic Curve | [435] |
| 162. | Diagrammatic representation of photic and geotropic stimulation | [436] |
| 163. | The effect of super-imposition of photic stimulus | [436] |
| 164. | Diagrammatic representation of the mechanical and electrical response | [443] |
| 165. | Diagrammatic representation of geo-electric response | [447] |
| 166. | Diagrammatic representation of Methods of Axial and Vertical Rotation | [449] |
| 167. | Diagrammatic representation of the geo-electric response of the shoot | [450] |
| 168. | Geo-electric response of the petiole of Tropæolum | [452] |
| 169. | Geo-electric response of the scape of Uriclis | [453] |
| 170. | Mechanical and electric response to indirect stimulation | [463] |
| 171. | Diagrammatic representation of mechanical and electric response of root | [464] |
| 172. | Diagrammatic representation of geo-electric response of root-tip | [469] |
| 173. | Diagrammatic representation of geo-electric 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 (Bryophyllum) | [488] |
| 177. | Curve of geo-electric excitation in different layers of Nymphæa | [497] |
| 178. | Curve of geo-electric excitation in Bryophyllum | [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 and phototropic actions | [505] |
| 182. | Comparative balancing effects of white and red lights | [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 temperature on geotropic torsion | [514] |
| 187. | Simultaneous records of variation of temperature, on up and down movement, and of torsion of the leaf of Mimosa | [518] |
| 188. | Arrest of pulsatory movement of leaflet of Desmodium gyrans by light | [528] |
| 189. | Effect of unilateral light on hyponastic movement | [529] |
| 190. | The Nyctitropic Recorder | [537] |
| 191. | Effect of sudden darkness on leaflet of Casia alata | [539] |
| 192. | Diurnal movement of the leaflet of Cassia alata | [540] |
| 193. | The day and night position of the petiole and terminal leaflet of Desmodium gyrans | [541] |
| 194. | Diurnal record of the terminal leaflet of Desmodium gyrans | [542] |
| 195. | Photograph of closed flower of Nymphæa during day | [550] |
| 196. | Photograph of open flower of Nymphæa at night | [550] |
| 197. | Action of light on the petal of Nymphæa | [551] |
| 198. | Diurnal movement of the petal of Nymphæa | [552] |
| 199. | Diurnal record of the Sijbaria Palm | [556] |
| 200. | Diurnal record of inclined Palm, geotropically curved procumbent stem of Tropæolum, and dia-geotropic leaf of Palm | [557] |
| 201. | Diurnal record of leaves of Dahlia, Papya, and Croton | [558] |
| 202. | Diurnal record of procumbent stem of Tropæolum, and leaf of Dahlia for two successive days | [560] |
| 203. | Abolition of the diurnal movement under constant temperature (Tropæolum) | [565] |
| 204. | Effect of inversion of plant on diurnal movement of Tropæolum | [567] |
| 205. | Electric response of the leaf stalk of Bryophyllum under light | [571] |
| 206. | Diagrammatic representation of electric after-effect of photic stimulation | [571] |
| 207. | After-effect of pre-maximum photic stimulation | [574] |
| 208. | After-effect of maximum photic stimulation | [574] |
| 209. | After-effect of post-maximum photic stimulation | [574] |
| 210. | Diurnal record of Mimosa in summer and winter | [577] |
| 211. | Record of diurnal variation of torsion in Mimosa leaf | [582] |
| 212. | Continuous record of automatic pulsation of Mimosa leaf | [585] |
| 213. | Photometric record showing variation of intensity of light from morning to evening | [586] |
| 214. | Record of leaf of Mimosa after amputation of sub-petioles | [589] |
| 215. | Diurnal record of Cassia leaf | [591] |
| 216. | Post-maximum after-effect of light on response of leaflet of Cassia | [592] |
| 217. | Effect of periodic alternation of light and darkness on response of Mimosa leaf | [594] |
| 218. | Pre-maximum after-effect of light in Mimosa | [595] |
| 219. | After-effect at maximum | [595] |
| 220. | Post-maximum after-effect exhibiting over-shooting below position of equilibrium | [595] |