. Electro-physiology. Electrophysiology. VI ELECTROMOTIVE ACTION IN VEGETABLE CELLS 21 the leaf, and must with an ingoing direction be regarded in a certain sense as its after-effect. Under these conditions it is clear that the manifestations of excitation must be studied before the state of rest. In leading off from the upper and lower surface of a lobe, one unpolarisable electrode being situated between the three sensitive hairs, the other directly opposite on the lower (external) surface, and then exciting the other lobe of the leaf mechanically or electrically (as in Fig. 143), a diphasic
. Electro-physiology. Electrophysiology. VI ELECTROMOTIVE ACTION IN VEGETABLE CELLS 21 the leaf, and must with an ingoing direction be regarded in a certain sense as its after-effect. Under these conditions it is clear that the manifestations of excitation must be studied before the state of rest. In leading off from the upper and lower surface of a lobe, one unpolarisable electrode being situated between the three sensitive hairs, the other directly opposite on the lower (external) surface, and then exciting the other lobe of the leaf mechanically or electrically (as in Fig. 143), a diphasic variation appears each time, as can easily be photographed with the capillary electrometer (Fig. 144). In the case of a leaf " modified" by previous excitation, where the lower surface is already positive to the upper, the current is in the first place reversed shortly after stimulating, the lower surface becoming rapidly negative. After about half. FIG. 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 Biedermann, W. (Wilhelm), 1852-1929; Welby, Frances A. (Frances Alice). London : Macmillan
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan
