H 



K 



131. Conjugation of Paramazcium caudatum. [A-C, after R. HERTWIG; D-K, after 



MAUPAS.] (The macronuclei dotted in all the figures.) 



A. Micronuclei preparing for their first division. B, Second division. C. Third division ; 



iree polar bodies or "corpuscules de rebut," 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 



ime enlarged. H. Cleavage-nucleus (c) preparing for the first division. /. The cleavage-nucleus 



las divided twice. J. After three divisions of the cleavage-nucleus ; the macron ucleus is breaking 



up. K. Four of the nuclei enlarging to form the new macronuclei. 



