. Zoology : for students and general readers . Zoology. Tlip«p o-i-flmilpa liVp Vig. W.~Ama>.ba diffluem -Ehr. A, the Xliehe gldUUiet), HKC len-hand flgnre, the most usual foitn ; the right shows the broad, flat pseudopodia ; the arrows indicate the direction of circula- Af ter Claris. (pseudopodia) from Viirious parts of the body, as if it were falling apart; then it retracts these transparent feet and becomes perfectly smooth and rounded, resembling a drop of slimy, mucous mat- ter. The bodjr-mass is di- Tided into a clear cortical and a medullary, granular mass ; the outer h
. Zoology : for students and general readers . Zoology. Tlip«p o-i-flmilpa liVp Vig. W.~Ama>.ba diffluem -Ehr. A, the Xliehe gldUUiet), HKC len-hand flgnre, the most usual foitn ; the right shows the broad, flat pseudopodia ; the arrows indicate the direction of circula- Af ter Claris. (pseudopodia) from Viirious parts of the body, as if it were falling apart; then it retracts these transparent feet and becomes perfectly smooth and rounded, resembling a drop of slimy, mucous mat- ter. The bodjr-mass is di- Tided into a clear cortical and a medullary, granular mass ; the outer highly contractile, the inner granular portion acting virtually as a stock of food the grains of chlorophyll m vegetable cells and in dia-'â 'â¢"'''*"'sâ¢Â°"'«'' toms and desmids, circulate in regular, fixed currents, the arrows in the figure indicating the course of the circulating food. The act of circulation is probably assisted by a con- tractile vesicle (or vacuole) usually present. There is besides a distinct organ always pres- ent, the nucleus (see Fig. 11), so that the Amoeba earns the right to be called an organism. Be- sides this there is a head-end, as distin- guished from a hinder portion ; this head-end is tuber- culated and inter- nally free from granules. TheAmce- ba has the power of moving in partic- ular directions, the head-end usually advancing first; it selects appropriate food, and can engulf or swallow, digest and distribute the food thus absorbed to various portions of. 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
