. Protozoo?logy. Protozoa; Protozoa, Pathogenic. Gametes and copulation of -Micella vulgaris. C. copula. (.\fter B^lpetiewsky). Fic. 48. Stages in de\-elopment of Mastigella %-iIrea and Mastigina setosa. (.\fter X 1270. .1, flagellate stage of M. vitrea; B, same, somewhat older and before chromidia formatic^n; C, same ciuring chromidia formation; a, entire cell; b, nucleus only, shinwiug transfusion of chromatin to form chromidia; D, young Hagella stage of M. setosa, with heap of cltroraidia; E, same, older form with pseudopodia, comi>act chromidia, and food vacuole; F, same,
. Protozoo?logy. Protozoa; Protozoa, Pathogenic. Gametes and copulation of -Micella vulgaris. C. copula. (.\fter B^lpetiewsky). Fic. 48. Stages in de\-elopment of Mastigella %-iIrea and Mastigina setosa. (.\fter X 1270. .1, flagellate stage of M. vitrea; B, same, somewhat older and before chromidia formatic^n; C, same ciuring chromidia formation; a, entire cell; b, nucleus only, shinwiug transfusion of chromatin to form chromidia; D, young Hagella stage of M. setosa, with heap of cltroraidia; E, same, older form with pseudopodia, comi>act chromidia, and food vacuole; F, same, young form witli peripheral "bristles;" G, same, formation of gametic nuclei a, from iiliochromidia, b. o'rowth, and at maturitv of the cvcle, these masses become distributed throughout the cell body in the form of deeply staining chromatin granules (Fig. 43). When fully mature the protoplasm breaks down into a number of pseudopodiospores, each with tlistributed chromatin, and these form new arcella shells in which the protoplasm ultimately. 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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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkandphiladel
