. Annual report of the Cornell University Agricultural Experiment Station, Ithaca, Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Rural School Leaflet. 959 year and a half, the last two permanent incisors will have come in, and the sheep will be from four-and-one-half to five years of age. The molars, or grinders, or back teeth as they are called, come in somewhat regular order, filling the back parts of the jaws in about the same time, all the molars being in place, and all in wear at the end of five years. The lips of the sheep are peculiar in thei
. Annual report of the Cornell University Agricultural Experiment Station, Ithaca, Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). Rural School Leaflet. 959 year and a half, the last two permanent incisors will have come in, and the sheep will be from four-and-one-half to five years of age. The molars, or grinders, or back teeth as they are called, come in somewhat regular order, filling the back parts of the jaws in about the same time, all the molars being in place, and all in wear at the end of five years. The lips of the sheep are peculiar in their construction and take an important part in the gathering of the food. The upper lip has no muzzle as is seen on cattle (the broad patch on the upper lip which is provided with an excretory apparatus, and which we may recognize by the beads. Fig. 57.—Middle wool sheep in England of perspiration which stand upon a cow's upper lip in hot weather). Instead, the sheep's upper lip is divided in the middle by a fissure, which allows either part to be moved independently. This construction of teeth and lips, coupled with the small size of the animal, enables sheep to graze land much more closely than cattle. After the food has been partly masticated it passes down through the gullet or oesophagus into the first of the four stomachs called the rumen. If we remember the order to which the sheep belong, Rumi- nantia, we will have no trouble in remembering the name of the first stomach. Here the food is somewhat softened by the warmth and. 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 Cornell University. Agricultural Experiment Station. [Ithaca, N. Y. ?], 1900-1910. James B. Lyon, State printer)
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