. Protozoo?logy. Protozoa; Protozoa, Pathogenic. M '»--r fi^ ^'. Entameba histolytica. (After Craig.) A, organism showing rods and granules of chro- matin in the nucleus, A'acuole with some stained substance, and dense ectoplasm; B, the chromatin of the nucleus passing into the cell plasm, where it is distributed as chromidia, shown n C; D, aggregation of chromidia to form secondary nuclei (see Fig. 51, of Ameba limax); E, "spore formation" by budding; F, spores of Entameba histolytica as seen in feces. develop two flagella similar to those of the dinoflagellata, and swim off. After
. Protozoo?logy. Protozoa; Protozoa, Pathogenic. M '»--r fi^ ^'. Entameba histolytica. (After Craig.) A, organism showing rods and granules of chro- matin in the nucleus, A'acuole with some stained substance, and dense ectoplasm; B, the chromatin of the nucleus passing into the cell plasm, where it is distributed as chromidia, shown n C; D, aggregation of chromidia to form secondary nuclei (see Fig. 51, of Ameba limax); E, "spore formation" by budding; F, spores of Entameba histolytica as seen in feces. develop two flagella similar to those of the dinoflagellata, and swim off. After a time one of the flagella tiu-ns into a tentacle, and the characteristic structures of the adult are then formed (Ishikawa). Budding is the characteristic method of reproduction of the suctoria, and is interesting from the fact that it may be either on the surface, as in ephelota, or inside the body, as in acineta (Fig. 33). The latter condition is derived from the former by the bud-forming area sinking below the surface and being covered over by a membrane so that a small Ijrood pouch is created within which the buds swim about by means of their embryonic cilia before making their escape (Fig. 34).. 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 and Philadelphia, Lea & Febiger
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