. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMORECEPTION IX APLYSIA 213 attmotive substance. First, its possible volatility was tested. Air was bubbled through a bottle containing sea water and I'ii'a, and then led through tubing to a bottle containing hungry aplysias. No matter how long or under what circum- stances this was clone—including varying , of air How, introduction of an air-breaker to break up the air current into bubbles, using small or large (juantir of I*Iva. warming the sea water containing the Uk'a—the aplysias <li<! not In every
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CHEMORECEPTION IX APLYSIA 213 attmotive substance. First, its possible volatility was tested. Air was bubbled through a bottle containing sea water and I'ii'a, and then led through tubing to a bottle containing hungry aplysias. No matter how long or under what circum- stances this was clone—including varying , of air How, introduction of an air-breaker to break up the air current into bubbles, using small or large (juantir of I*Iva. warming the sea water containing the Uk'a—the aplysias <li<! not In every case, placing a few drops of the sea water covering Ulva into tin. FIGURE 2. Response of Aplysiti at surface of water to (_7n/-uater dropped from pipette at right onto mouth. bottle with the aplysias aroused them almost immediately, f'/7v?-water was boiled for 15 minutes, and then tested. It was as effective as the original solution, as determined by comparative dilution tests---diluting the L7z'cr-\vater before and after boiling with successive additions of sea water and retesting. Dilutions of five to seven times were possible with both solutions before the effectiveness was lost. Ether extraction was tried, using a separatory funnel and shaking with ether for 15 minutes. The material remained in the water fraction, and that could be boiled, after the extraction, for 15 minutes and still be as potent as before. The tests so far conducted do not allow much to be said about the chemical nature of the material, except that it seems more like substances associated with contact. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard,
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
