. Zoology : for students and general readers . Zoology. 246 ZOOLOGY. The ovaries or testes, as tlie sex of the clam may be, are bilaterally symmetrical, blended with the wall of the visce- ral or liver-mass, and are yellowish. The genital openings. Fig. 165,—Nervous system of the clam, natural size, a, oesophageal ganglion ; 6, commissure anterior to the mouth ; c, pedal commissure ; d. pedal ganglia ; e, parieto- splanchnic commissures ; /. ganglia ; g, branchial nerves ; h, I, pal- lia) nerves ; i, siphonal nerves ; k^ anal nerves \ itt, nerves to the anterior adductor.—
. Zoology : for students and general readers . Zoology. 246 ZOOLOGY. The ovaries or testes, as tlie sex of the clam may be, are bilaterally symmetrical, blended with the wall of the visce- ral or liver-mass, and are yellowish. The genital openings. Fig. 165,—Nervous system of the clam, natural size, a, oesophageal ganglion ; 6, commissure anterior to the mouth ; c, pedal commissure ; d. pedal ganglia ; e, parieto- splanchnic commissures ; /. ganglia ; g, branchial nerves ; h, I, pal- lia) nerves ; i, siphonal nerves ; k^ anal nerves \ itt, nerves to the anterior adductor.— Drawn by W. K. Brooks. are jDaired and lie near the base of the foot. Both eggs and semen arise from tlie epithelium of the sexual glands. The eggs pass out into the body-cavity, or accumulate between 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York : Henry Holt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1879
