XXXV111 PLANT RESPONSE 



FIG. PAGE 



253. Positive Heliotropic Response of Leaflet of Robinia to Sunlight 



Acting from Above ......... 629 



254. Positive Heliotropic Response of Leaflets of Erythrina indica . . 629 



255. Responses of Mimosa to Sunlight of not too long Duration . . . 631 



256. Response of Pulvinus of Mimosa to Action of Continuous Light from 



Above . . . . . . . . . . . 632 



257. Responses of Oxalis to Sunlight ....... 633 



258. Negative Multiple Response in Biophytum when Acted on from 



Above by Strong Sunlight ........ 634 



259. Different Limits of Flexibility . 647 



260. Movement of Terminal Leaflet of Desmodium placing itself Parallel 



to Incident Horizontal Light ....... 649 



261. Curve showing Time-relations of the Responsive Angular Movement 



of Terminal Leaflet of Desmodium under Light, as represented in 



the last figure . . . . . . . . . . . 649 



262. Record showing that Lamina is not the Perceptive Organ . . 651 



263. Positive Heliotropic Movement of Leaf of Mangifera indica under 



Sunlight acting from Above ........ 653 



264. Negative Heliotropic Response of Leaves of Artocarpus under Sun- 



light acting from Above . ....... 654 



265. Torsional Response of Terminal Leaflet of Desmodium under the 



Action of Lateral Sunlight ........ 657 



266. Torsion-recorder .......... 658 



267. Torsional Response of Leaf of Mimosa when Laterally Stimulated 



by Sunlight ' 659 



268. Torsional Response of Leaf of Mimosa to Lateral Chemical 



Stimulus .......... . 660 



269. Torsional Response of Complex Strip of Ebonite and India-rubber 



under Lateral Action of Strong Radiation . .... 660 



270. Records showing Modification of Torsional Response under Induced 



Variations of Differential Excitabilities in Pulvinus of Mimosa . 662 



271. Records showing Torsional Response to Geotropic Stimulus and 



Induced Modifications in Terminal Leaflet of Erythrina indica . 666 



272. Retardation and Reversal of Normal Torsional Movement by the 



unilateral Action of Light in Porana panicidata .... 670 



273. Photographic Record of Diurnal Movement of Petiole of Biophytum 



from 5 P.M. till 9 A.M 680 



274. Continuous Records of the Diurnal Movement during Thirty-six 



Hours in Two Specimens of Mimosa . . . . . . 681 



275. Initiation of Multiple Response in Lateral Leaflet of Desmodium 



originally at Standstill ......... 690 



276. Photographic Record of Autonomous Pulsations in Lateral Leaflet 



of Desmodium gyrans under Action of Sunlight, showing Periodic 

 Reversals ........... 692 



277. Model of an Artificial Plant 709 



278. Diagrammatic Representation of a Windmill with Attached Dynamo 



and Accumulator ......... 74 2 



