. The Protozoa. Protozoa. SEXUAL PHENOMENA IN THE PROTOZOA 231 gametes and microgametes occurs during the same day, and after a similar period of asexual increase, showing that the same ultimate causes probably operate in each. The macrogamete is distinguished from the schizonts by the possession of a reserve store of nutriment,. Fig. 128. — Life-history of a Coccidium, [SCHAUD1NN.] a, b, c, schizonts and asexual reproduction (schizogony). The merozoites at c repeat the cycle or pass on to the follnwing stages: d, e,f, development of the female or macrogamete; h, i,j, development of the male g
. The Protozoa. Protozoa. SEXUAL PHENOMENA IN THE PROTOZOA 231 gametes and microgametes occurs during the same day, and after a similar period of asexual increase, showing that the same ultimate causes probably operate in each. The macrogamete is distinguished from the schizonts by the possession of a reserve store of nutriment,. Fig. 128. — Life-history of a Coccidium, [SCHAUD1NN.] a, b, c, schizonts and asexual reproduction (schizogony). The merozoites at c repeat the cycle or pass on to the follnwing stages: d, e,f, development of the female or macrogamete; h, i,j, development of the male gametes; ^.copulation; k and /, stages in the formation of the spores and ^porozoites. in the form of granules, which are used in the later development. The storage of these granules begins in the young merozoite (Fig. 128, e-g) and in the close vicinity of the The nucleus is not essentially different from that of the schizont, but at one stage, according to Schaudinn, a large amount of chromatin is thrown out of 1 Cf. yolk-formation in eggs of Metazoa ; see Wilson, The Cell, p. 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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Keywords: ., bookauthorcalkinsg, bookcentury1900, bookdecade1900, bookyear1901
