. Zoology : for students and general readers . Zoology. Fig. \(j.—Actmospkmium. «, a mor- sel of food di-awn into the cortical layer b; c, centra] parenchymatous mass of the body ; cZ, some balls of food-etiiff in the latter; e, pseudopodia of the cortical layer.—After Fig. X7.—Heliophrys variabUis. A sun- animalcule, showing the pseudopods, nuclei, and vacuoles.—From Macallister. mineral. Undoubted Foraminifera occur in the Silurian formation, while large masses of carboniferous and cre- taceous rocks are formed by their shells. Order 2. Radiolaria.—These Rhizopods have the genera

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. Zoology : for students and general readers . Zoology. Fig. \(j.—Actmospkmium. «, a mor- sel of food di-awn into the cortical layer b; c, centra] parenchymatous mass of the body ; cZ, some balls of food-etiiff in the latter; e, pseudopodia of the cortical layer.—After Fig. X7.—Heliophrys variabUis. A sun- animalcule, showing the pseudopods, nuclei, and vacuoles.—From Macallister. mineral. Undoubted Foraminifera occur in the Silurian formation, while large masses of carboniferous and cre- taceous rocks are formed by their shells. Order 2. Radiolaria.—These Rhizopods have the general structure of Amoebae, but secrete beautiful silicious shells,. 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879