. The Protozoa. Protozoa. Fig. 131. — Conjugation of Parametrium caudatum. \A-C, after R. HERTWJG; D-Kt after MAUPAS.] (The macronuclei dotted in all the figures.) A. Micronuclei preparing for their first division. D. Second division. C. Third division; three polar bodies or " corpuscules de r6but," and one dividing germ-nucleus in each animal. D. Interchange of the germ-nuclei. E. The same, enlarged. F. Fusion of the germ-nuclei. G. The same enlarged. H. Cleavage-nucleus (c) preparing for the first division. /. The cleavage-nucleus has divided twice, y. After three divisions of the
. The Protozoa. Protozoa. Fig. 131. — Conjugation of Parametrium caudatum. \A-C, after R. HERTWJG; D-Kt after MAUPAS.] (The macronuclei dotted in all the figures.) A. Micronuclei preparing for their first division. D. Second division. C. Third division; three polar bodies or " corpuscules de r6but," and one dividing germ-nucleus in each animal. D. Interchange of the germ-nuclei. E. The same, enlarged. F. Fusion of the germ-nuclei. G. The same enlarged. H. Cleavage-nucleus (c) preparing for the first division. /. The cleavage-nucleus has divided twice, y. After three divisions of the cleavage-nucleus; the macronucleus is breaking up. K. Four of the nuclei enlarging to form the new 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 Calkins, Gary N. (Gary Nathan), b. 1869. New York, The Macmillan company; London, Mamcillan & co. , ltd.
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