. Behavior of the lower organisms. Animal behavior; Invertebrates. - + B. Fig. 130. — Fffects of the constant electric current on pieces of Polyorchis. After Bancroft (1Q04). A, meridional strip passing through the manubrium. B, similar strip stretched out in line with the current. C, isolated tentacles. that directed toward the anode (Fig. 128, a). If the Hydra is lying parallel with the current, the body contracts much more readily when the anterior end is directed toward the anode than when it is directed toward the cathode. In either of these positions the tentacles usually remain extended
. Behavior of the lower organisms. Animal behavior; Invertebrates. - + B. Fig. 130. — Fffects of the constant electric current on pieces of Polyorchis. After Bancroft (1Q04). A, meridional strip passing through the manubrium. B, similar strip stretched out in line with the current. C, isolated tentacles. that directed toward the anode (Fig. 128, a). If the Hydra is lying parallel with the current, the body contracts much more readily when the anterior end is directed toward the anode than when it is directed toward the cathode. In either of these positions the tentacles usually remain extended, and somewhat inclined toward the cathode (Figs. 128 and 129). But if a very strong current is used, both body and ten-. 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 Jennings, H. S. (Herbert Spencer), 1868-1947. New York, The Columbia university press, The Macmillan company, agents; [etc. , etc. ]
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