. The classification of lower organisms. Biology. Fig. 18.—a, Cryptomonas sp. b, Rhodomonas baltica after Kylin (1935). c, Chi- lomonas Parmecium. d, Cyathomonas sp. e, Sennia sp. f. Vegetative cell, and g, zoospore of Paradinium Pouchetii after Chatton (1920). All x 1,000. its volume and contains most of the chromatin. Dangeard (1910) and Belar (1916) have observed details of mitosis. The numerous chromosomes appear within an intact nuclear membrane and form a disk- or drum-shaped figure with its axis at right angles to the axis of the cell. No granule more massive than the chromosomes persis
. The classification of lower organisms. Biology. Fig. 18.—a, Cryptomonas sp. b, Rhodomonas baltica after Kylin (1935). c, Chi- lomonas Parmecium. d, Cyathomonas sp. e, Sennia sp. f. Vegetative cell, and g, zoospore of Paradinium Pouchetii after Chatton (1920). All x 1,000. its volume and contains most of the chromatin. Dangeard (1910) and Belar (1916) have observed details of mitosis. The numerous chromosomes appear within an intact nuclear membrane and form a disk- or drum-shaped figure with its axis at right angles to the axis of the cell. No granule more massive than the chromosomes persists and divides with them. About thirty species are known. They may be treated as five families. 1. Flagellate cells elongate, with one plane of symmetry. 2. Not parasitic, flagella not markedly dif- ferentiated. 3. Non-motile in the vegetative con- dition Family 1. Cryptococcacea. 3. Flagellate in the vegetative con- dition Family 2. 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 Copeland, Herbert Faulkner. Palo Alto, Calif. , Pacific Books
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