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He dug around my rumbling molars with drawing-knives and burglars' tools, and cross-cut saws and patent rollers, and marlinspikes and two-foot rules. He climbed upon my lap and prodded with crowbar and with garden spade, to see that I was not defrauded of all the agony that's made.

The most evident points in which Carnivora differ from Ungulata are their possession of at least four and frequently five digits, which always bear claws and never hoofs; all but the sea otter have six small incisor teeth in each jaw; the canines are large; the molars never show flattened, curved crests after the ruminant pattern, but are more or less tubercular, and one tooth in the hinder part of each jaw becomes blade-like, for shearing off lumps of flesh.

His four yellow chisels tore the brown shells open, his molars ground the sweet kernels into meal, and he ate and ate till his short legs could hardly keep his fat little belly off the ground. Then came the first light snow, and his feet left tracks which bore a faint resemblance to a baby's that is, if your imagination was sufficiently vigorous.

One of the most marked proofs of the effects of rapid breathing was that of a boy of eleven years of age for whom I had to extract the upper and lower first permanent molars on each side. He breathed for nearly a minute, when I removed in about twenty seconds all four of the teeth, without a moment's intermission or the stopping the vigorous breathing; and not a murmur, sigh, or tear afterward.

A recapitulation of these differences would be too minutely technical for insertion here, and it must be enough to say that while it cannot be assigned to either group, yet in the distribution of hair on the muzzle, in the presence of a small suborbital gland, in shortness of tail and the light color of its horns, it is sheep-like; in the absence of interdigital glands, the shortness and stoutness of its cannon bones, and in the presence of a small accessory inner column on the upper molars, it is bovine.

The last teeth, which are placed at the back of the jaw, are called molars, from the Latin word mola, which means a millstone. You must be prepared to meet with several Latin words as we go on; but never mind; this will give you the opportunity of learning a little Latin, and so of keeping your brother in order, if he ever looks down upon you because he is learning Latin at school.

The dentist can stop the decay in a tooth by cleaning out the little hole and filling it with gold or some other material. It may cause a little pain and expense to have the teeth filled, but it will save a hundred times as much pain and expense later. The six year molars need special care as they are likely to decay early.

M. de Perthes gave me the freest access to his materials, with unreserved explanations of all the facts of the case that had come under his observation; and having considered his Menchecourt Section, taken with such scrupulous care, and identified the molars of elephas primigenius, which he had exhumed with his own hands deep in that section, along with flint weapons, presenting the same character as some of those found in the Broxham Cave, I arrived at the conviction that they were of contemporaneous age, although I was not prepared to go along with M. de Perthes in all his inferences regarding the hieroglyphics and in an industrial interpretation of the various other objects which he had met with."

View in the horizontal plane of the teeth of the left half of the lower and the left half of the upper jaw of the Coypu rat to show the single great gnawing incisor on each side, the four flat grinding molars and the wide gap between molars and incisors.

"It ain't healthy to have your teeth so dirty," Old Heck explained, coloring and in an apologizing manner, when Skinny discovered him, after supper that evening, carefully scrubbing his molars. Skinny watched the performance, saw the result, and murmured: "Guess I'll get me one of them layouts!"