. Elements of zoölogy. Zoology. CRABS, ETC. 93 denskiold, is the little Metridia armata, that exists in such quantities in the snow on the shores of the Arctic Ocean that persons and ani- mals appear to be walking in fire, the splashes of light presenting a wonderful spectacle. The light is of a bluish-white tint, which in the spectroscope gives a one-colored Labrador-blue spectrum. Oyster-Crabs (Pinnotheres).—These are the delicate forms commonly found in oysters and various bivalve shells, as well as the water- lung of Holothurians (Fig. B 104). While the oyster-crabs find protection in othe


. Elements of zoölogy. Zoology. CRABS, ETC. 93 denskiold, is the little Metridia armata, that exists in such quantities in the snow on the shores of the Arctic Ocean that persons and ani- mals appear to be walking in fire, the splashes of light presenting a wonderful spectacle. The light is of a bluish-white tint, which in the spectroscope gives a one-colored Labrador-blue spectrum. Oyster-Crabs (Pinnotheres).—These are the delicate forms commonly found in oysters and various bivalve shells, as well as the water- lung of Holothurians (Fig. B 104). While the oyster-crabs find protection in other ani-. 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 Holder, Charles Frederick, 1851-1915; Holder, Joseph Bassett, 1824-1888, joint author. New York : D. Appleton and company


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1884