. Elementary biology; an introduction to the science of life. Biology. 298 ELEMENTARY BIOLOGY Among some of the fresh-water algae the swimming cells produced are of two sizes. Tn such cases the smaller cell is usually more active in the water; the larger cell has more food material. In the common rockweed, or bladder wrack, of our. 1 c ^ â >. \. 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 Gruenberg, Benjamin C. (Benj
. Elementary biology; an introduction to the science of life. Biology. 298 ELEMENTARY BIOLOGY Among some of the fresh-water algae the swimming cells produced are of two sizes. Tn such cases the smaller cell is usually more active in the water; the larger cell has more food material. In the common rockweed, or bladder wrack, of our. 1 c ^ â >. \. 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 Gruenberg, Benjamin C. (Benjamin Charles), 1875-1965. Boston New York [etc. ] Ginn and company
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