77^ PLANT RESPONSE 



Musa paradisiaca, response of, 68, 6i6 

 Muscarin, effect of, on cardiac pulsation, 4 



Nectar, excretion of, 398 



Nemec on statolithic theory, 494 



Noll on anomalous plasmolytic movement, 550 



Nyctitropic movement, of Biophytiitn petiole, 680 



,, ■ ,, of il/Zw^ija' petiole, 681 



5) )! supposed distinction between heliotropic and, 677 



Old tissues, excitatory reaction in, 57 



Oltmanns on heliotropic response of Lepiditini, 608 



Optic Lever Recorder, 5 



Oryza saliva, direct and indirect effects of stimulus on, 463 

 ,, ,, diurnal variation of growth of, 473 



,, ,, effect of electrification of soil on growth of, 560 



Osmotic versus excitatory action : on ascent of sap, 383 

 ,, ,, ,, ,, on growth, 485 



Oxalis, diurnal sleep of, 63 



on mechanical response, 549, 550, 551, 552 



Para-heliotropism, 621 



Paramacia, chemotaxis of, 699 

 ,, galvanotaxis of, 698 



,, thermotaxis of, 69S 



Particles, response to unilateral pressure of, 496 



Passifiora, death-discoloration of petals of, 183 

 ,, effect of age on response, 79 



,, ,, season on response, 80 



,, response of filament, 78 



,, ,, tendril, 89, 611 



,, writhing movement of tendril of, 92 



Perceptive region, oi Artocarpus leaf, 60 



,, ,, oi Desiitodiuin leaflet, 588, 650 



1, ,, of leaflet of £^j'Mr/«rt /«<//£V7, 651 



,, ,, true, 544 



, versus responding organ, 542, 588 



Periodic after-effect, 683, 685 



,, ,, factors deterniiniog, 468 



,, fatigue, 108 



,, groupings: of growth-pulsation, 417, 425 

 ,, ,, of mechanical response, 286 



,, reversals in Desmodiiini under light, 692 

 ,, variation oi Destnodmm pulsation, 341, 470 

 ,, ,, of growth -rate, 470, 473, 474 



,, ,, of transpiration, 472 



Pertz, D., on influence of alternating stimulation, 684 



Pfeffer on action of light, 566 

 ,, on chemo-taxis, 599 



