. Elementary text-book of zoology [electronic resource]. Zoology. 264 MOLLUSC A. (seen as a white tube running down to the anus)^ the mantle flap can be reflected over to the left, and the true dorsal surface of the body or diaphragm exposed. The pulmonary chamber is then seen to be triangular in shape, bounded by the collar in front, the vascular mantle above and the diaphragm below. Along its outer edge, emerging at the posterior angle from the upper coils, is the i^ng tubular rectum terminating in the anus. Fig. 183.—First Dissection of Snail {Helix pomatia). (Ad. nat.). The snail is pinned
. Elementary text-book of zoology [electronic resource]. Zoology. 264 MOLLUSC A. (seen as a white tube running down to the anus)^ the mantle flap can be reflected over to the left, and the true dorsal surface of the body or diaphragm exposed. The pulmonary chamber is then seen to be triangular in shape, bounded by the collar in front, the vascular mantle above and the diaphragm below. Along its outer edge, emerging at the posterior angle from the upper coils, is the i^ng tubular rectum terminating in the anus. Fig. 183.—First Dissection of Snail {Helix pomatia). (Ad. nat.). The snail is pinned out on its ventral surface, and the mantle is cut free from the body by a cut along the collar and round the spiral. Note the pulmonary veins in the mantle leading to the auricle of the heart, which passes to the ventricle and thence by an aorta to 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 Masterman, Arthur Thomas; Parsons, John Herbert, Sir, 1868-1957, donor; S. H. Lazarus (Firm); University College, London. Library Services. Edinburgh : E. & S. Livingstone
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1901
