. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. 146 CYOLOSIS. capillary circulation of animals. On account of these movements in the latex, the laticiferous vessels have been denominated Ginenchymatous (xiviui, 1 move), and the movements themselves are included under the name Gyclosis (^auxXog, a circle). The plants in which the movements are best observed are those having the latex mUky or coloured, such as various species of Ficus, Euphorbia, and Ohelidonium. In fig. 241 there is represented a small fragment of a
. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. 146 CYOLOSIS. capillary circulation of animals. On account of these movements in the latex, the laticiferous vessels have been denominated Ginenchymatous (xiviui, 1 move), and the movements themselves are included under the name Gyclosis (^auxXog, a circle). The plants in which the movements are best observed are those having the latex mUky or coloured, such as various species of Ficus, Euphorbia, and Ohelidonium. In fig. 241 there is represented a small fragment of a leaf of Ohelidonium majus (celandine), which shows the current of orange granules in the lati- ciferous vessels, their direction being indicated by arrows. If the young unexpanded sepal of the Celandine is removed from the plant, and put under the microscope, or if the inner lining of the young stipule of Ficus elastica be treated in a similar manner, very obvious motion is seen in the granular contents of the vessels, and this motion is modified by pricking the vessels or by pres- sure. If the microscope be applied to the stipule of Ficus elastica, while still attached to the plant and uninjured, pres- sure with any blunt object on the stipule will be observed to cause a marked oscillation in the vessels, thus showing their continuity. There will also be seen a regular movement from the apex towards the base, independent of external influences, when the stipule is allowed to lie on the field of the microscope without any pressure or injury whatever. This movement has been observed to continue for at least twenty minutes. It is of importance to distinguish between those molecular movements which are caused by injury and pressure, and those which defend on changes going on in the interior of the living plant; The elaborated sap descends through the vessels of the liber. It appears, then, that in the case of Exogenous plants, the fluid matter in the soil, containing different sub
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
