. Agricultural zoology. Zoology. 44 zooLOGy. Order : Ruminantia (Cud-chewixg Mammals). The feet end in two hoof-covered toes, besides which two "after toes" are present. The upper incisors are absent, with few exceptions, but many deer have canines in the upper jaw. The back teeth of Rumi- nants are compound teeth. The lower jaw is smaller than the upper, and during chewing undergoes lateral movements, so that the plants taken in as food are ground up, as it were, into small pieces, between the projecting enamel ridges of the upper and lower back teeth. The stomach consists of four s
. Agricultural zoology. Zoology. 44 zooLOGy. Order : Ruminantia (Cud-chewixg Mammals). The feet end in two hoof-covered toes, besides which two "after toes" are present. The upper incisors are absent, with few exceptions, but many deer have canines in the upper jaw. The back teeth of Rumi- nants are compound teeth. The lower jaw is smaller than the upper, and during chewing undergoes lateral movements, so that the plants taken in as food are ground up, as it were, into small pieces, between the projecting enamel ridges of the upper and lower back teeth. The stomach consists of four subdivisions; these are (1) the rumen, or paunch, where the greater. Fig. 26 Skull of a Sheep. part of the food and water taken collects; (2) the reticulum, or honey-comb stomach ; (3) the psalterium, or manyplies; (4) the abomasum, reed, or rennet stomach. The last is the second largest part, and in it the same chemical changes take place as in the simple stomach of a non-ruminant. After the food has remained for some time in the paunch it passes up again through the gullet, and [as the " cud "] under- goes a second chewing. The soft mass resulting is once more swallowed, and passes into the psalterium and abomasum. Not only the families of Tylopoda (Camels, Llamas),. 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 Bos, Jan Ritzema, 1850-1928; Ainsworth Davis, J. R. (James Richard), 1861-1934. London, Chapman & Hall, Ld.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
