. Fresh-water biology. Freshwater biology. io6 FRESH-WATER BIOLOGY i8 (17,19) Colonies at first globular, later irregular in shape, and perforated or netted Clathrocystis Henfrey. Cells spherical, united in great numbers to form at first globular, later irregular colonies, which often become clathrate, forming an open meshwork. Coramon in lakes and ponds; C. aeruginosa Henfr. is often thrown upon rocks along shores to form, mixed with Coelosphaerium kiUzingianum Nag., the so-called "green ;. Fig. 38. Clathrocystis aeruginosa Henfrey. (Original.) X4S5. 19 (17, 18) Colonies irreg
. Fresh-water biology. Freshwater biology. io6 FRESH-WATER BIOLOGY i8 (17,19) Colonies at first globular, later irregular in shape, and perforated or netted Clathrocystis Henfrey. Cells spherical, united in great numbers to form at first globular, later irregular colonies, which often become clathrate, forming an open meshwork. Coramon in lakes and ponds; C. aeruginosa Henfr. is often thrown upon rocks along shores to form, mixed with Coelosphaerium kiUzingianum Nag., the so-called "green ;. Fig. 38. Clathrocystis aeruginosa Henfrey. (Original.) X4S5. 19 (17, 18) Colonies irregular in shape, frequently forming films 20 20 (21, 22) Individual mucous coats clearly evident for each daughter cell of the colony Gloeocapsa Kiitzing. Cells spherical, with thick, often lamellose, gelatinous membrane; solitary or generally united into microscopic colonies in which the membranes of the daughter cells remain enclosed for a long time within that of the mother-cell. Forming gelatinous substrata on moist walls and wet and dripping rocks. Fig. 39. Gloeocapsa polydermatica Kiitzing. X 465. (Original.) 21 (20, 22) Cells enveloped in a common gelatinous matrix. Aphanocapsa 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 Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
