. General physiology; an outline of the science of life. fiilgiP iiP. i'lG. 24.—a, Plant-cell from a stamen-liair of Tradescantia. (After Strasburger.) 6, Thalassicolla nucleata, a radiolarian cell, c, ParamcBcium aurelia, a ciliate-infusoriau cell, wMcli contains witliin the protoplasm at each end a pulsating vacuole. appear and appear again at the same spot, usually rhythmically, while the liquid rhythmically mixes with the protoplasm and again accumulates. Many of these pulsating vacuoles have special efferent canals and a constant wall, as is the case in many uni- cellular free-living orga
. General physiology; an outline of the science of life. fiilgiP iiP. i'lG. 24.—a, Plant-cell from a stamen-liair of Tradescantia. (After Strasburger.) 6, Thalassicolla nucleata, a radiolarian cell, c, ParamcBcium aurelia, a ciliate-infusoriau cell, wMcli contains witliin the protoplasm at each end a pulsating vacuole. appear and appear again at the same spot, usually rhythmically, while the liquid rhythmically mixes with the protoplasm and again accumulates. Many of these pulsating vacuoles have special efferent canals and a constant wall, as is the case in many uni- cellular free-living organisms, especially the ciliate Infusoria (Fig. 24, c). In addition to such constant elements, in many cells solid constituents are met with that are present as such only tempo- rarily. Here belong especially the food-bodies that are found in cells that nourish themselves by taking in solid food-constituents. Unicellular naked organisms, such as Amoeba, white blood-cells,. 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 Verworn, Max, 1863-1921; Lee, Frederic S. (Frederic Schiller), 1859-1939. London, Macmillan and co. , limited; New York, The Macmillan company
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