. An introduction to the study of zoology. Zoology. Fig. 71.—Shell of the Fresh-water Mussel, Anodtrnta cygma. Anodonta and TJnio, so abundant in our streams. The. Fig. 72. —Shell of the River Mussel, Umo liioralis. latter is the source of small seed-pearls, which in 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 Lindsay, B. London, S. Sonnenschein

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895