. Physiological botany; I. Outlines of the histology of phænogamous plants. II. Vegetable physiology. Plant physiology; Plant anatomy. 408 MOVEMENTS. known as the dinostat. It consists of a clock-work which car- ries a disc on which can be placed growing plants : by the revo- lution of this horizontal disc all parts are in turn given the same , amount of illumination. If the clock-work is so arranged as to rotate a horizontal shaft to which a growing plant can be affixed, any one part of the plant will be exposed to the influence of gravitation in precisely the same manner and to the same exte
. Physiological botany; I. Outlines of the histology of phænogamous plants. II. Vegetable physiology. Plant physiology; Plant anatomy. 408 MOVEMENTS. known as the dinostat. It consists of a clock-work which car- ries a disc on which can be placed growing plants : by the revo- lution of this horizontal disc all parts are in turn given the same , amount of illumination. If the clock-work is so arranged as to rotate a horizontal shaft to which a growing plant can be affixed, any one part of the plant will be exposed to the influence of gravitation in precisely the same manner and to the same extent as all other parts. When circumnutation is plainly modified by unequal growth, striking disturbances are produced which have received much. investigation. Among these cases are the changes of position which many peduncles undergo during the development of flow- ers and fruits. Although the extremity of the flower-stalk passes through its definite orbit, it is in some instances so affected by the greater growth of the upper side as to curve downwards, while a similar excessive growth on the under side will produce an upward curvature. De Vries, who has given much attention to these phenomena, has coined the adjectives epinastic, denoting curvature from growth on the upper side, and hyponastic, that from growth on the under side of an extending organ. Fig. 180. Disc of a clinostat covereil by a glass case g, and bearing two Windsor beans witli primary and secondary Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Goodale, George L. (George Lincoln), 1839-1923. New York [etc. ] : American Book Co.
Size: 1659px × 1506px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectplantanatomy, bookyea
