. A manual of elementary zoology . Zoology. 468 MANUAL OF ELEMENTARY ZOOLOGY up, and mixed with saliva. When it is swallowed again it passes along a muscular groove on the upper side of the second division of the stomach, known as the reticulum or honeycomb-bag from the pattern on its mucous membrane, into the psalterium or manyplies. The folded walls of this chamber, covered with papillae, serve as a filter, through which the food passes to the abomasum or reed, where the gastric juice is secreted. Paired outgrowths of the frontal bones are common in ruminants. In cattle, antelopes, sheep, an
. A manual of elementary zoology . Zoology. 468 MANUAL OF ELEMENTARY ZOOLOGY up, and mixed with saliva. When it is swallowed again it passes along a muscular groove on the upper side of the second division of the stomach, known as the reticulum or honeycomb-bag from the pattern on its mucous membrane, into the psalterium or manyplies. The folded walls of this chamber, covered with papillae, serve as a filter, through which the food passes to the abomasum or reed, where the gastric juice is secreted. Paired outgrowths of the frontal bones are common in ruminants. In cattle, antelopes, sheep, and goats they are per- manent and capped with hardened epidermis, the structures thus formed being known as horns. In deer they lose their skin and form purely bony antlers, which are shed B D E Fig. 346. — A transverse section of an upper molar tooth of a horse. — From Theobald, after Chauveau. A, External cement; B, ex- ternal enamel; C, dentine ; D, internal enamel; E, in- ternal 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
