. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 160 DWIGHT L. HOPKINS contractile vacuole formation which MacLennan (1941) and others have called the nephridioplasm. It is entirely possible that the water leaving the food vacuoles is absorbed into the contractile vacuoles. The contractile vacuoles In an amoeba moving forward rapidly, the contractile vacuoles form at the posterior end, as shown in Figure If. When the individuals are flattened out and feeding actively, it is difficult to distinguish the posterior end unless the location o • •" • ... *SKi SSSSI. FIGURE
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 160 DWIGHT L. HOPKINS contractile vacuole formation which MacLennan (1941) and others have called the nephridioplasm. It is entirely possible that the water leaving the food vacuoles is absorbed into the contractile vacuoles. The contractile vacuoles In an amoeba moving forward rapidly, the contractile vacuoles form at the posterior end, as shown in Figure If. When the individuals are flattened out and feeding actively, it is difficult to distinguish the posterior end unless the location o • •" • ... *SKi SSSSI. FIGURE 1. Diagram showing the characteristic structure of Amoeba lacerata Dujardin. a, hyaline border; b, large cytoplasmic granule (vacuole) ; c, contractile vacuole; d, nucleus; e, small clear vacuole adhering to a recently engulfed bacterium; /, food vacuole; g, food vacuole in position for egestion; /;, nephridioplasm. of the contractile vacuoles is accepted as a distinguishing feature of the posterior part of the cell. Observations on the origin of contractile vacuoles in active amoebae have revealed the following interesting facts:. 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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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
