. Studies in general physiology. Physiology; Phototropism; Geotropism; Reproduction; Irritability; Regeneration (Biology). FIG. 126 same density of current, much greater than that formed upon the head, and within a short time a thick white layer is formed which drops off readily when the animal moves. The secretion may be profuse enough to render the water in the trough turbid in a short PIG. 127 If the current is passed in a transverse direction through the animal, secretion occurs only upon one-half of the body — upon the half directed toward the anode. We see, therefore, that in all


. Studies in general physiology. Physiology; Phototropism; Geotropism; Reproduction; Irritability; Regeneration (Biology). FIG. 126 same density of current, much greater than that formed upon the head, and within a short time a thick white layer is formed which drops off readily when the animal moves. The secretion may be profuse enough to render the water in the trough turbid in a short PIG. 127 If the current is passed in a transverse direction through the animal, secretion occurs only upon one-half of the body — upon the half directed toward the anode. We see, therefore, that in all three cases the glands of the skin upon the anodal side or the anodal end of the animal are always the ones to begin to secrete. The results are the same whether metallic electrodes or unpolarizable electrodes are used. Digitized by Microsoft®. 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 Loeb, Jacques, 1859-1924. Chicago, The University of Chicago Press


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