Milch Cows and Dairy Farming / Comprising the Breeds, Breeding, and Management, in Health and Disease, of Dairy and Other Stock, the Selection of Milch Cows, with a Full Explanation of Guenon's Method; The Culture of Forage Plants, and the Production of Milk, Butter, and Cheese: Embodying the Most Recent Improvements, and Adapted to Farming in the United States and British Provinces. With a Treatise upon the Dairy Husbandry of Holland; To Which Is Added Horsfall's System of Dairy Management

by Charles Louis Flint

Fig. 17. Third week.

Fig. 18. Month.

These teeth are temporary, and are often called milk-teeth. Their edge is very sharp; and, as the animal begins to live upon more solid food, this edge becomes worn, showing the bony part of the tooth beneath, and indicates, with considerable precision, the length of time they have been used. The centre or oldest teeth show the marks of age first, and often become somewhat worn before the corner teeth appear. At eight weeks, the four inner teeth are nearly as sharp as before. They appear worn not so much on the outer edge or line of the tooth, as inside this line; but, after this, the edge begins gradually to lose its sharpness, and to present a more flattened surface; while the next outer teeth wear down like the four central ones; and at three months this wearing off is very apparent, till at four months all the incisor teeth appear worn, but the inner ones the most. Now the teeth begin slowly to diminish in size by a kind of contraction, as well as wearing down, and the distance apart becomes more and more apparent.

Fig. 19. Five to eight months.

Fig. 20. Ten months.

Fig. 21. Twelve months.