Page:Life Movements in Plants.djvu/251

Rh The normal retarding effect of elemric stimulus on Specimens in active state of growth was demonstrated in record given in Fig. 72, where the normal rate was found greatly reduced after stimulation.

Abnormal arre/ertm'cm of growth INHIN' elm/Hr stimulus; Ihperiment 88.—-—For my present purpose I took a sub-tonic specimen of seedling 01' wheat, its rate of growth heinn as low as 0°05 wr second. After electric stimula- tion the rate was found enhanced to 0'12 a per second, or about tWo and-a41qu timns, I giw (Fig. 32) two records

Em. 8:2.“—l‘lnhmmlment of rate of growth in HHlMoHit: .NIHZPHIH‘HH oi “ht-at seedling. [ﬁrst 50m...- 0f record on itatinnai'y, svcund writ-1 (b) on movng plan: N, record before stimulation. h‘, after stimulation.

obtained with two different Spt'cimtélln‘. In the first, the record was taken on a stationary plate (Fig. 82) ; the closeness of successive dots in N Show the feeble I‘tlil‘ of growth of the sub-tonic specimen, the wide-r Spacing after stimulation, S, exhibit the induced enhancement of growth.