. The biology of hydra and of some other coelenterates, 1961. Hydra; Cnidaria; Ctenophora; Cnidaria; Hydra. CHARLES E. LANE 171. l4» Fig. 2. Frontal Section through the fishing tentacle of Physalia X 200. The gastrovascular cavity of the tentacle communicates in the center of the field with the cavity of a single "; Hypertrophy of the gastrodermis begins at the equator of the battery. capsule and coils in the same clock-wise direction in approximately the same plane. If the surviving tentacle be stimulated by gradually increasing the concentration of solutes in the surroundin
. The biology of hydra and of some other coelenterates, 1961. Hydra; Cnidaria; Ctenophora; Cnidaria; Hydra. CHARLES E. LANE 171. l4» Fig. 2. Frontal Section through the fishing tentacle of Physalia X 200. The gastrovascular cavity of the tentacle communicates in the center of the field with the cavity of a single "; Hypertrophy of the gastrodermis begins at the equator of the battery. capsule and coils in the same clock-wise direction in approximately the same plane. If the surviving tentacle be stimulated by gradually increasing the concentration of solutes in the surrounding water, the nema- tocysts may be made to discharge. This is a dramatic, explosive process, the nematocyst threads being hurled from the capsule with sufficient force to penetrate the surface film. This observation explains our early experience of being severely stung even through a surgical glove. In our laboratory we isolate surviving nematocysts by con- trolled autolysis at 4", followed by screening, sieving, washing, and settling. The washing process is continued until the wash water is no longer toxic when injected into the hemocoele of the fiddler crab. This point may acquire some significance when one attempts to compare the activity and biochemistry of the toxin. 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 Symposium on the Physiology and Ultrastructure of Hydra and Some Other Coelenterates (1961 : Coral Gables, Fla. ); Lenhoff, Howard M; Loomis, W. Farnsworth (William Farnsworth), 1914-. Coral Gables, Fla. , University of Miami Press
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