Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 528
constitute a large portion ofthe bluish-green scum which i, floats on the surface of stagnantwater. Nostoc multiplies, like the Oscillariacea*, by the subdivisionof its filaments, portions of which escape from the gelatinous masswherein they were imbedded, and move slowly through the water inthe… … increase in length by the transverse sub-division of its segments. By the repeti-tion of this process a mass of new filamentsis produced, the parts of which are at firstconfused, but afterwards become more dis-tinctly separated by the interposition ofthe gelatinous substance developed betweenthem.…
Microscopy
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