774 PLANT RESPONSE 



Laws of electrical response, 42 

 „ growth, 439 

 ,, growth-curvature, 535 

 ,, mechanical response, 51 

 ,, polar action of currents, 199, 207, 558 

 ,, torsional response, 662 

 Leaves, dia-heliotropism of, 640 

 ,, drooping of, by frost, 400 

 ,, response in ordinary, 61 

 Lepidium, heliotropic response of, 608 

 Light, action of, on autonomous torsion, 669 



on longitudinal growth, 572, 573, 574 

 ,, on non-growing radial organ, 571 

 ,, on pulsation of Desmodium, 690, 691 

 ,, on pulvinated organ, 570 

 ,, on subtonic tissue, 569 

 anisotropy induced by, 84 

 directive versus non-directive action of, 634 

 diverse movements induced by, 565 

 effect on periodic reversals, 692 

 induction of torsion by, 659 



multiple response induced by, "303, 584, 604, 634 

 orientating action of, 587, 697 

 supposed specific differences in the action of, 567 

 transmitted action of, 606 

 Light and gravitation, incomplete analogy between the actions of, 597 



See Heliotropic response 

 Longitudinal response in india-rubber, 12 

 ,, ,, in muscle, 12 



,, in plants, 13, 76-80 

 Lysimachia Nummularia, heliotropic response of, 622, 624 



Mangifera ndica, response of, 653 

 Marchanlia hallus, action of light on, 622 

 Mechanical response, by curling, 91 



,, ,, by uncurling, 89 



,, ,, effect of chemical agents on, 1 3 1- 1 37 



,, ,, ,, temperature on, 142-146 



,, ,, favourable conditions for exhibition of, 48 



,, ,, of Allium peduncle, 87 



,, ,, of Artocarpus, 55 



,, ,, of Biophy turn, see Biophytum. 



, , , , of Mimosa, see Mimosa. 



,, ,, of ordinary leaves, 61, 653, 654 



,, ,, similarity of, in pulvinus, pulvinoid and growing organ, 534 



,, ,, to artificial turgidity- variation, 45 



,, ,, to suctional activity, 399 



,, ,, two types of, 46 



Michelia Champaca, chemotropic response of, 548 



