. The life of inland waters; an elementary text book of fresh-water biology for American students. Freshwater biology. Diatoms 109 Diatoms—Diatoms are among the most abundant of living things in all the waters of the earth. They occur singly and free, or attached by gelatinous stalks, or. Fig. 34. Miscellaneous diatoms, mostly species of Navicula; the filaments are blue-green algae, mostly Oscillatoria. aggregated together in gelatinous tubes, or compactly grouped in more or less coherent filaments. AH are of microscopic size. They are most easily recognized by their possession of a box-like s
. The life of inland waters; an elementary text book of fresh-water biology for American students. Freshwater biology. Diatoms 109 Diatoms—Diatoms are among the most abundant of living things in all the waters of the earth. They occur singly and free, or attached by gelatinous stalks, or. Fig. 34. Miscellaneous diatoms, mostly species of Navicula; the filaments are blue-green algae, mostly Oscillatoria. aggregated together in gelatinous tubes, or compactly grouped in more or less coherent filaments. AH are of microscopic size. They are most easily recognized by their possession of a box-like shell, composed of two valves, with overlapping edges. These valves are stiffened by silica which is deposited in their outer walls, often in beautiful patterns. The opposed edges of the. 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 Needham, James G. (James George), 1868-1956; Lloyd, John Thomas, 1884- joint author. Ithaca,N. Y. , The Comstock Publishing Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1915
