. Elementary text-book of zoology. Zoology. VOLVOCINID^—ASTASIAD,*;. 195 In their whole developmental cycle they agree very closely with uni. cellular algte and fungi; still the analogy to the developmental processes of many Infusoria, Atnpliileptus, is not to be passed over. Spwmella vulgaris (termo Ehrbg.) of Cienkowski shows a somewhat different development and cyst formation; it receives solid food (by aid of the food vacuoles) and is fixed by a fibre, as also Ckromulina nebulosa Cnk., and Ochracea Ehrbg. A second group nearly allied to the Algre (Protococcacea) is that of the Volvocinidce
. Elementary text-book of zoology. Zoology. VOLVOCINID^—ASTASIAD,*;. 195 In their whole developmental cycle they agree very closely with uni. cellular algte and fungi; still the analogy to the developmental processes of many Infusoria, Atnpliileptus, is not to be passed over. Spwmella vulgaris (termo Ehrbg.) of Cienkowski shows a somewhat different development and cyst formation; it receives solid food (by aid of the food vacuoles) and is fixed by a fibre, as also Ckromulina nebulosa Cnk., and Ochracea Ehrbg. A second group nearly allied to the Algre (Protococcacea) is that of the Volvocinidce. These organisms consist of colonies of cells united by a common gelatinous substance, and the following characteristics indicate their close relationship to the Algse:—(1) in the inactive stage they possess a cellulose membrane; (2) they exhale oxygen; (3) they possess an abundance of chlorophyll and of vegetable red or brown coloured 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 Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. New York : Macmillan
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884
