562 MANUAL OF MODERN FARRIERY 



directly across it. To prevent the vein from shifting 

 while the lancet is inserted, it should be pierced as 

 near to the point of the finger as possible. 



In our figure above referred to it will be seen that 

 the trunk of the vein passes from under the lower jaw 

 at b, and that its branches go along the soft portion 

 of the cheek. At ^ a small nerve takes an opposite 

 course, passing over the vein, and in bleeding care 

 should be taken not to divide it. Under this nerve 

 there is a thick, fleshy muscle, which is called the 

 zigomaticus major, whose office is to take a principal 

 part in moving the jaw during mastication. The 

 letter d marks the situation of another much thinner 

 muscle, beneath which the branches of the cheek-vein 

 pass, and lead to the corner of the mouth, and assist 

 in giving motion to the lips. 



ON THE AGE OF SHEEP AS INDICATED BY 

 THE TEETH. 



The sheep, as well as all the other ruminating 

 animals, is destitute of the upper fore, or cutting- 

 teeth, which are also termed the incisors, but is 

 furnished with eight cutting-teeth in the lower jaw. 



At two years of age two of these drop out, and 

 are replaced by other two. At three years old four 

 of them are renewed, and the others at the age of 

 four years. 



The teeth undergo considerable changes between 

 the first and eighth years, which we have delineated 

 in Plate xiv, so as to enable persons to judge of the 

 age of sheep by their dentition. 



Fig. 2 exhibits the appearance of the teeth at one 

 year old. Their cutting, or outer edges, form a 

 crescent-shaped line, the teeth being nearly all of a 



