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. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESISTANCE OF FISHES. 327 water had filled all the bottles and had been running through them for some time, during which time the corks of all the bottles had been sealed with modeling clay, it was again tested for concentration and constancy of dissolved gas. The samples were usually collected at the exit tube of bottle C. If the tests showed the desired concentration to be present and constant, fishes were quickly introduced, the corks rapidly replaced and reseated, and observations begun. Because of the fact that at. FIG.

. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESISTANCE OF FISHES. 327 water had filled all the bottles and had been running through them for some time, during which time the corks of all the bottles had been sealed with modeling clay, it was again tested for concentration and constancy of dissolved gas. The samples were usually collected at the exit tube of bottle C. If the tests showed the desired concentration to be present and constant, fishes were quickly introduced, the corks rapidly replaced and reseated, and observations begun. Because of the fact that at. FIG. Stock Photo
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RHR884

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1986 x 1258 px | 33.6 x 21.3 cm | 13.2 x 8.4 inches | 150dpi

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. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESISTANCE OF FISHES. 327 water had filled all the bottles and had been running through them for some time, during which time the corks of all the bottles had been sealed with modeling clay, it was again tested for concentration and constancy of dissolved gas. The samples were usually collected at the exit tube of bottle C. If the tests showed the desired concentration to be present and constant, fishes were quickly introduced, the corks rapidly replaced and reseated, and observations begun. Because of the fact that at. FIG. i. Showing the arrangement of the catch bottle A and the experimental bottles B and C. In .4 the inlet and outlet tubes are so arranged that bubbles of undissolved gas are retained in the bottle. In B and C the inlet tubes lead the water to the bottoms of the bottles. The outlet tubes reach only to the bottoms of the corks. This insures thorough mixing of the water and thus conditions throughout the bottles are the same while the water is flowing through. the beginning of an experiment one set of fishes usually de- manded the entire time of the observer, but one set was intro- duced at a time. The second set was introduced and observed after the first set had passed through the first and more vigorous stages of the succumbing process. In order to make certain that the water as it passed through bottle B was not affected to a measurable extent, by the presence of the fishes, a number of tests were made of samples collected at the exit tube of bottle B. None of these tests showed any. 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 work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Rich