. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 67 plasmic substances under the action of the kiHin^ fluids and are ahvays to be interpreted as artefacts. The chromidiosomes are suspended in, and held in place by, the linin reticuhnn, which in some cases is extremely delicate and difficult to see, while the inter- alveolar spaces are filled with fluid enchylema {e. g., Arcella vukjaris). In other cases, owing to the suspension of very fine chromomeres, the outlines of the intranuclear alveoli are characteristically distinct {e. g., Acineta grandis). In most massi
. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 67 plasmic substances under the action of the kiHin^ fluids and are ahvays to be interpreted as artefacts. The chromidiosomes are suspended in, and held in place by, the linin reticuhnn, which in some cases is extremely delicate and difficult to see, while the inter- alveolar spaces are filled with fluid enchylema {e. g., Arcella vukjaris). In other cases, owing to the suspension of very fine chromomeres, the outlines of the intranuclear alveoli are characteristically distinct {e. g., Acineta grandis). In most massive nuclei, however, the comparati\ely large chromidiosomes distort the alveolar walls, more or less completely obliterating the reticulum. {c) Membrane.— Like other constituent parts of the protozoon nuclei, the membranes are highly variable, sometimes presenting in optical section only one contour on the outer side {e. g., Adino- sphoBrium); sometimes showing contours both outside and inside {Amceha protens). In the former case the inner zone adjacent to the membrane shows a decreasing density inwards, until the linin merges insensibh' into the intranuclear reticulum. In free-nuclei. 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. Philadelphia, New York, Lea & Febiger
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Keywords: ., bookauthorcalkinsgaryngarynatha, bookcentury1900, bookdecade1920
