. The animal creation: a popular introduction to zoology. Zoology. 276 GASTEEOPODA. their mantle is a fleshy disk scarcely separated from the rest of the skin, and only occupies the forepart of the back, where it covers the pulmonary cavity. It often encloses in its thickness a small flat shelly plate. These animals are herbivorous; they feed principally upon young plants, fruits, mushrooms, &c., and are most voracious towards evening. During the heat of the day they remain concealed under stones, or beneath some heap of half-decayed leaves, or even in the earth, and they seldom come out e
. The animal creation: a popular introduction to zoology. Zoology. 276 GASTEEOPODA. their mantle is a fleshy disk scarcely separated from the rest of the skin, and only occupies the forepart of the back, where it covers the pulmonary cavity. It often encloses in its thickness a small flat shelly plate. These animals are herbivorous; they feed principally upon young plants, fruits, mushrooms, &c., and are most voracious towards evening. During the heat of the day they remain concealed under stones, or beneath some heap of half-decayed leaves, or even in the earth, and they seldom come out except in the morning and evening when the air is humid; they are especially abundant after rain. During the cold season they bury themselves in the ground and remain torpid. The Snails {Helix) have a complete and apparent shell. Their structure differs very little from that of the Slugs, and their habits are nearly the same. In summer they are very voracious and destructive, but. Fig. 212.—garden snail. in autumn they eat little. On the a]3proach of winter they retu^e into some hole and draw them- selves into their shell, shutting up the aperture with a kind of door secreted by the edge of the mantle. The species of Snails are very numerous; they are found in all parts of the world. The Aquatic Air-breathing Gasteropods have but two. 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 Jones, Thomas Rymer, 1810-1880. London : Society for Promoting Knowledge
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Keywords: ., bookauthorjo, bookcentury1800, bookdecade1860, booksubjectzoology
