ILLUSTRATIONS XXXV 



FIG. PAGE 



1 80. Balanced Record of Response in Growing Peduncle of Eucharis 



Lily to Electrical Stimulation 436 



181. Semicircular Electrolytic Rheostat interposed in Heating Cir- 



cuit 443 



182. Record of Growth in Crinum at Temperature of 34 C. and 



35° C . . .445 



183. Thermo-crescent Curve of Growth in Crinum Lily under Continu- 



ously Increasing Temperature . ....... 447 



184. Curve showing Relation between Temperature and Rate of Growth, 



as deduced from the Thermo-crescent Curve .... 449 



185. Series of Responses of Growing Organ of Crinum Lily, taken under 



Balanced Conditions at Three Different Temperatures . . . 460 



186. Curve showing the Relation between Stimulus and Response in the 



same Organ, under the two different Tonic Conditions of 30 C. 

 (upper curve) and 37 C. (lower curve) ...... 467 



187. Continuous Photographic Record of Autonomous Pulsation of Des- 



modium gyrans from 6 p.m. to 6 a.m. . . . . . 470 



188. Hydrometric Apparatus for Recording Continuous Variation of Rate 



of Growth 471 



189. Photographic Record showing Variation of Rate of Transpiration in 



Cucurbita, from 3 p.m. to 12 p. m 472 



190. Continuous Photographic Record of Variation of Rate of Growth in 



Four Days' Old Seedling of Oryza sativa, from 3 p.m. till 9 a.m., 

 that is during Eighteen Hours 473 



191. Continuous Photographic Record of Variation of Rate of Growth in 



Seedling of Tamarindus indica, a Fortnight Old, from 3 p.m. to 



3 a.m , 474 



192. Effect of Carbonic Acid Gas on Growth 480 



193. Balanced Records of Effect of Ether on Growth 481 



194. Excitatory Effect of Dilute Solution of Sodium Carbonate on 



Growth 481 



195. Acceleration of Growth by Application of Solution of Sugar . . 482 



196. Spasmodic Alternations of Growth under Alcohol .... 483 



197. Unbalanced Record showing Action of Acid in Causing Relaxation 



and Ultimate Arrest of Growth 483 



198. Unbalanced Record showing the Action of Alkali, and the Antago- 



nistic Action of Subsequent Application of Acid .... 484 



199. Effect of Strong Solution of NaCl on Rate of Growth, as Modified by 



Different Constitutions of Specimens . . . . . . 484 



200. The Effect of Different Constitutions in Determining the Resistance 



Offered to Poisons. The Action of 5 per Cent. Solution of Copper 

 Sulphate 487 



201. The Effect of Favourable Induced Constitution in Enabling Plant to 



Shake off Result of Toxic Dose of Copper Sulphate . . . . 4 8 7 



202. Opposite Effects of Large and Small Doses of Poison . . . 488 



203. Diagrammatic Representation showing Differential Effect of Weight 



on Lateral Walls of Cells 494 



204. Diagrammatic Representation of a Multicellular Organ . . . 495 



