ILLUSTRATIONS. 



FIGLKE. 



93. 



94. 

 95. 

 9(r. 

 97. 

 98. 



99. 

 100. 

 101. 



102. 



103. 

 104. 

 105. 



10«. 



107. 

 108. 

 109. 



110. 

 111. 

 Ii2. 



114. 



Arrangement for compensation of growth-movement 



by equal subsidence of plant-holder 

 Photograph of the Balanced Crescograph 

 Balanced Crescographic record . . . . . 

 Record showing the effect of CO.^ .... 



Ilffect of ether and of chloroform . . ' . 



Diagrammatic representation of effects of Indirect and 



Direct stimulation ....... 



Tropic curvature of Grinum ...... 



Turgor variation caused by Indirect stimulation 

 Response of himona leaf under transverse transmis- 

 sion of effect of electric stimulus . . . . 



Diagrammatic representation of Indirect and Direct 



stimulation of tendril ..... 



Record by Method of Balance .... 



Variation of growth under direct stimulation 

 Positive curvature of tendril of Cueurbita 

 Diagrammatic representation of effects of Indirec 



and Direct unilateral stimulation of tendril 

 Retardation of rate of growth under cathode 

 Acceleration of rate of growth under anode 

 Thermonastic and radionaslic response^ of petal of 



Zephyranthes ....... 



The Thermonastic Kecorder ..... 



Negative thermonastic respcmse of Nymphcea 

 Successive positive responses of the terminal leaflet 



of bean plant ....... 



Positive response and recovery under moderate photo 



tropic stimulation ...... 



Persistent positive curvature under stronger stimulation 



21 



257 



258 

 260 

 265 



266 



275 



276 

 281 



282 



290 

 291 

 292 

 295 



296 

 303 

 303 



308 

 309 

 310 



317 



318 

 318 



