. A manual of zoology. iS MANUAL OF ZOOLOGY SECT. and developed from it by division. It is mainly by this simple process of division into two, or binary fission, as it is called, that reproduction or multiplication takes place in the Fig. 2.—Amoeba polypodia in successive phases of division. The light spot is the contractile vacuole; the dark the nucleus. (From Lang's Text-Book, aftel F. E. Schulze.) Amceba thus consists of an undivided particle of proto- plasm containing a nucleus. To such a particle the term cell is applied. In higher groups the animal when fully developed, consists
. A manual of zoology. iS MANUAL OF ZOOLOGY SECT. and developed from it by division. It is mainly by this simple process of division into two, or binary fission, as it is called, that reproduction or multiplication takes place in the Fig. 2.—Amoeba polypodia in successive phases of division. The light spot is the contractile vacuole; the dark the nucleus. (From Lang's Text-Book, aftel F. E. Schulze.) Amceba thus consists of an undivided particle of proto- plasm containing a nucleus. To such a particle the term cell is applied. In higher groups the animal when fully developed, consists of a number of such cells, usually differ- ing in character in different parts ; and simple animals, such. 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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