General physiology; an outline of the science of life . Fig. 89.—Spoi-e of a horse-tail. a. The elaters in the moist state are curled around the cell6. The elaters in the dry state are rapidly spread apart. through the drying and shortening of their outer sides. If, whileobserving with the microscope, one breathes upon them in thisextended state, they are seen to coil themselves in spirals aboutthe spore with excessive rapidity, their outer surfaces extendingby swelling. At the moment when the moisture of the breathdisappears, the bands extend again with equal rapidity; and theexperiment can b
General physiology; an outline of the science of life . Fig. 89.—Spoi-e of a horse-tail. a. The elaters in the moist state are curled around the cell6. The elaters in the dry state are rapidly spread apart. through the drying and shortening of their outer sides. If, whileobserving with the microscope, one breathes upon them in thisextended state, they are seen to coil themselves in spirals aboutthe spore with excessive rapidity, their outer surfaces extendingby swelling. At the moment when the moisture of the breathdisappears, the bands extend again with equal rapidity; and theexperiment can be repeated, like all experiments on swelling, asoften as one wishes. Swelling-movements are very common among plants, and someof them play an important role in plant life. The great powerthat can be developed by swelling can be realised from the fact thathuge rocks can be split with wedges of swelling wood. ELEMENTARY VITAL PHENOMENA 225 c. Movements hy Change of the Cell-turgor With movements caused by a change of the cell-turgor, webegin the consi
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Keywords: ., bookcentury1800, bookdecade1890, bookidgen, booksubjectphysiology
