INDEX. 



159 



Osmic acid, action of, in retarding losses of tumes- 

 cence in dead tissues 



, action of, on the pulvinar tissues of 



35 



Mimosa pudica 



85,91 



Osmotic products, effects attending cessation of 

 functional manufacture of 



36 



P. 



Parenchyma, differences between the masses of, 

 making for elevation and depression of the primary 

 petiole of Mimosa pudica . • • • . 



Periodic movements in leaves of Mimosa pudica of 

 different ages ....... 



84 



79 



, facilities for, provided by the 

 primary pulvini of Mimosa pudica 



Persistence of movements in the leaves of Pithecolo- 



85 



bium saman . 67 



Petioles, cause of excessive elevation of, in Mimosa 



pudica during the latter part of the night 

 , divergence of , from the axis in relation to 



84 



accumulation of axillary pulvinar tissues 



Phenomena attending sudden exposure of detached 

 leaves of Mimosa pudica to direct sunshine . 



Pilobolus crystallinus, turgescence of the fertile 



67 



106 



filaments of — 27 



Pinnse, nyctitropic movements in the laminae of 

 , diurnal and nocturnal positions of, in Cassia 



48 



alata 



59 



, nocturnal position of, in Cassia alata, not 



determined by any rise in turgescence in the tissues 



making for it 



Finnules, rotation of, in Leuccena glauca 

 . relation of movements of. in Mi 



. 61 



73,74 



to variations in conditions of humidity . 



100 



Mi 



posure to direct sunshine 



103 



, localised movements of, in Mimosa pudica 115 



, arrangement of, in Mimosa pudica favour- 

 able to centrifugal propagation of movements 115, 117 



, effects following amputation of the tips of, 



M 



118 



Pithecolobium saman, conditions determining dis- 



position 



leaves of 



38 



f position of the various parts 

 of the leaves of, at an early stage of development . 



-, movements in mature leaves 



51 



of— 51, 67 



, relative stability of the diur- 

 nal position of the petiole in, owing to distal lever- 



age 



52 



, pinnules of, unfolded from 



the outset 



, development of pulvinar pads 



53 



of 



persistent movements of 



53 



leaves of 



Pitting of cell walls in relation to filtration 



67 

 67 



Pitting characteristic of pulvinar tissues giving 

 rise to rapid movements • 



very conspicuous in the pulvinar tissues of 

 Pithecolobium saman, 70, and of Ltucotna glauca 

 of cells of pulvinar parenchyma in Mimosa 



57 



74 



pudica ......... 84 



Poisons, action of gaseous and liquid, on the turges- 



16—18 



cence of vegetable tissues . m 



Portulaca grandiflora, effects of temperature on 



expansion of the flowers of — . 22 



Position, diurnal assumption of nocturnal, by leaves, 



37, and by stomata .46 







, period of maximal nocturnal, in nyctitropic 



leaves 



47 



, nocturnal, distinctive features of tissue* 



making for — 49 



, diurnal, distinctive features of tissues 



making for— . 49 



, nocturnal, one of reversion to a previously 



permanent or previously diurnal one 



51 



, nocturnal, of different pinnae in one and 



the same leaf of Cassia sumatrana may be conspi- 

 cuously unlike ........ 



, diurnal and nocturnal of leaves of Pithe- 

 colobium saman ....... 



63 



67 



, nocturnal, various conditions determining 



the assumption of, by the leaves of Leuc&na 

 glauca • •••••••• 



Pothos violacea, wilting of leaves of, under exposure 

 to direct sunshine ....... 



Products, accumulation of assiruilatory, in relation to 

 position . . 



Propagation of movements in Mimosa pudica regu- 

 lated by conditions affecting supply and loss of 



76 



103 



82 



water 



102 



, causes of, of movements in Mimosa 



pudica 



120 



of movements in the pinnules of 



Mimosa pudica after mechanical stimulation occurs 

 most readily centrifugally . 



of movementi may occur in spite of 

 repeated interruptions in the continuity of Haber- 

 landt's M Keizleitende system" . 



of movements through masses of dead 



117 



121 



tissues 



121 and Appendix Gr 



of movements in Mimosa pudica only 



occurs in connection with negative fluctuations in 



liquid pressure 



Protoplasm, relation of activity of, to turgescence . 



, tissues making for the diurnal position 



123 

 19 



relatively rich in 



49 



, active contraction of, in relation to the 



movements of the leaves of Mimosa pudica 

 Pulvini, structure ol 



96 



49,54 



structural features of, in relation to rate 

 of fluctuations in turgescence .... 



•, structural features of, in pinna of Cassia 

 alata, 60, and of C. sumatrana .... 



j tertiary, action of, in Leuccena glauca 

 secondary, structural features of, in 



57 



64 



74 



M\ 



sa 



