Archive image from page 16 of Dentition as indicative of the. Dentition as indicative of the age of the animals of the farm dentitionasindic00browrich Year: 1895 of the Animals of the Farm. 13 temporary incisors, and, if necessary, to refer to the molar teeth, in order to avoid such embarrassing blunders. Under ordinary circumstances it will be more frequently necessary to distinguish between a yearling and a two-year-old, than between a one-year-old and a five, and it fortunately happens that at the age of two years another molar, the fifth in situation, is in the mouth, and may be at once
Archive image from page 16 of Dentition as indicative of the. Dentition as indicative of the age of the animals of the farm dentitionasindic00browrich Year: 1895 of the Animals of the Farm. 13 temporary incisors, and, if necessary, to refer to the molar teeth, in order to avoid such embarrassing blunders. Under ordinary circumstances it will be more frequently necessary to distinguish between a yearling and a two-year-old, than between a one-year-old and a five, and it fortunately happens that at the age of two years another molar, the fifth in situation, is in the mouth, and may be at once distinguished by its recent appearance. Soon after eighteen months the fifth molar begins to protrude through the gum, and by the termination of the second year is level with the other molars, as shown in Fig. 8 (p. IG), so that any doubt which may remain after an inspection of the incisors may be settled by reference to the condition of the molars. Fig. 5.—Incisors of Colt at six months. It will be observed in the figure just referred to that the surfaces of four molars are worn level, while the points of the new tooth, the fifth in position, are rounded, excepting a small portion at the inner side of the tooth, which shows the eflfects of attrition, but only to a slight extent. The incisor teeth at two years of age have their tables per- fectly formed as a rule ; but, in some instances, the corner teeth, although they have lost their shell-like character, still have a portion of the posterior edge untouched, as shown in the illus- tration of the mouth of a two-year-old filly (Fig. 9, p. 17). Between two and three years of age the central temporary incisors of the horse are changed for permanent teeth, and the different phases of the change are sufficiently well defined to
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