CHAPTER III. 



TEMPORARY DENTITION OF THE HORSE, OX, 

 DOG AND PIG. 



The temporary (sometimes called milk or decidu- 

 ous) teeth of the foal are twenty-four in number, 

 twelve incisors or nippers and twelve molars or 

 grinders, six above and six below of each kind. 

 They present a dental formula, thus: 



Incisors, f |; molars, | 1=24. 



The temporary molars are up at or a few days 

 after birth; but the incisors make their appearance at 

 different periods. 



The incisors are divided into central, those nearest 

 the mesian line; lateral or dividers, those on either 

 side of the central ; and corners, those on the outside. 

 They are sometimes known as the first, second and 

 third pair. 



At birth the foal usually has no teeth, but a mem- 

 brane-like covering for the incisors. The molars 

 appear in two or three days. The incisors are cut in 

 pairs, two above and two below at a time. The 

 first pair protrude at from birth to eight days, usually 

 about the fifth. The second pair at from four to six 

 weeks. It usually takes about two months for the 



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