. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 258 R. WICHTERMAX AXD F. H. J. FIGGE death, paramecia become immobilized, change shape to become broadly ellipsoidal and settle on the bottom of the irradiation chamber. Contractile vacuoles function more slowly and sometimes become abnormally large. Active cyclosis ceases as the protoplasm becomes conspicuously darker and vacuolated. Clear, transparent, structureless, blister-like swellings appear on the pellicle prior to death. Near death, waves of trichocysts are extruded, suggesting that these structures—com- monly thoug
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 258 R. WICHTERMAX AXD F. H. J. FIGGE death, paramecia become immobilized, change shape to become broadly ellipsoidal and settle on the bottom of the irradiation chamber. Contractile vacuoles function more slowly and sometimes become abnormally large. Active cyclosis ceases as the protoplasm becomes conspicuously darker and vacuolated. Clear, transparent, structureless, blister-like swellings appear on the pellicle prior to death. Near death, waves of trichocysts are extruded, suggesting that these structures—com- monly thought of as organelles of defense—represent a response to an injury re- action. Specimens frequently become sub-spherical before their disintegration (Fig. 3).. 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, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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