. Studies in general physiology. Physiology; Phototropism; Geotropism; Reproduction; Irritability; Regeneration (Biology). Heteeomoephosis 139 VII. HETEEOMOEPHOSIS IN EUDENDEIUM (eAOEMOSUM ?) Eudendrium (racemosum ?) (Figs. 21a and 21&) consists of a main stem which terminates in a polyp at its upper end and in a root at its lower end. The root adheres to solid bodies. Stout lateral branches arise from the stem and grow upward. They also carry polyps at their tips. New branches may again arise from these, all of which are directed toward the tip of the main stem. I cut off the tips and roo
. Studies in general physiology. Physiology; Phototropism; Geotropism; Reproduction; Irritability; Regeneration (Biology). Heteeomoephosis 139 VII. HETEEOMOEPHOSIS IN EUDENDEIUM (eAOEMOSUM ?) Eudendrium (racemosum ?) (Figs. 21a and 21&) consists of a main stem which terminates in a polyp at its upper end and in a root at its lower end. The root adheres to solid bodies. Stout lateral branches arise from the stem and grow upward. They also carry polyps at their tips. New branches may again arise from these, all of which are directed toward the tip of the main stem. I cut off the tips and roots from stems of Euden- drium and suspended them in part with the tip, in part with the base directed downward in the aquarium. Both ends were surrounded by water. The stem began to grow from the two extremities, and polyps were formed at FIG. 2ia FIG. 216 feofft ends (Eigs. 21a and 21&). All Eudendria became biapical {just as does Tuhularia mesembryanthemum under similar conditions); with this difference, however, that in addition to the new tip, roots were at times formed, at one of the cut ends, which was never the case in Tubularia. To maintain the pieces of Eudendrium stems in a vertical position in the aquarium, I pushed them through lead plates in which fine holes had been punched. The plates rested. 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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