. The power of movement in plants . Plants; Botany. Chap. X. APOGEOTROPISM. 493 Fis. -?! and on the folio-wing day. During tlie second niglit it foil a little, and circumnntated during the following day; but it also moved a short distance to the right, which was caused by a little light having been ac- cidentally admitted on this side. The stem was now inclined &.r above the horizon, and had therefore risen 70°- "With time allowed it would jsrobably have become upright, and no doubt would have continued circum- nutating. The solo remarkable featm-e in the figure here given is t
. The power of movement in plants . Plants; Botany. Chap. X. APOGEOTROPISM. 493 Fis. -?! and on the folio-wing day. During tlie second niglit it foil a little, and circumnntated during the following day; but it also moved a short distance to the right, which was caused by a little light having been ac- cidentally admitted on this side. The stem was now inclined &.r above the horizon, and had therefore risen 70°- "With time allowed it would jsrobably have become upright, and no doubt would have continued circum- nutating. The solo remarkable featm-e in the figure here given is the straightness of the course pursued. The stem, however, did not move upwards at an equable rate, and it sometimes stood almost or quite still. Such periods probably represent attempts to circumnutate in a direction opposite to apogeo- tropism. The herbaceous stem of a Verbena melindres (?) laid hori- zontally, rose in 7 h. so much that it could no longer be observed on the vertical glass which stood in front of the plant. The long line which was traced was almost absolutely straight. After the 7 h. it still continued *â to rise, but now circumnntated ^'y^'SMs/rn^rans; apogeotropicroore- âi- T,ii /-. , r 11 ⢠J nient of Stem from 10° beneath tr slightly. On the following day it stood upright, and circum- nntated regularly, as shown in fig. 82, given in the fourth chapter. The stems of several other plants which were highly sensitive to apogeotropism rose up in almost straight lines, and 60° above horizon, traced on ver tical glass, from Ma]â¢<-^ 12th to 13th. The sub- sequent circumnutating movement is iiltewise shown up to on the 15th. Nocturnal course repi-esented, as usual, by a broken line. Movement not greatly mag- nified, and tracing reduced to two- thirds of oriirinal Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appea
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