PLATE III. 141 



By the means of this scale the size of the cot, and of the timber 

 proper for its construction, may be ascertained. 



It will be seen in the third chapter, (page 21,) that the above 

 sheep cot is calculated only for sheep of a middling size, and that 

 It must be enlarged, if wanted for larger sized sheep. 



Figures 6, 7, 8, 9, 10, 1 1, of plate II, shews the age of sheep, 

 and the manner in which they change their teeth. 



In the first year, the eight cutting teeth, (fig. 6,) are narrow 

 and sharp, and are called lamb's teeth. 



In the second year, (fig. 7,) the two middle teeth fall out and 

 are replaced by two new ones, which are broader than the six 

 others. 



In the third year (fig. 8,) two other sharp teeth, one on each 

 side of the two middle ones, are replaced by two new broad teeth. 



In the fourth year, (fig. 9,) there will be six broad teeth, and 

 there will; remain but two narrow .eeth,one at each end of the row. 



In the fifth year, (fig. 10,) all the sharp teeth are replaced by 

 eight broad teeth, when a sheep is said to be full mouthed. 



In the sixth year the grinders begin to be worn down by rub- 

 bing against each other. 



In the seventh or eighth year, and often sooner, some teeth 

 will commonly fall out, or become broken, as represented in 

 fig. 11. 



See the 4th chapter, pages 28, 29. 



PLATE III. 



Represents a shepherd A, (fig. 1.) holding a knife, B, and be- 

 ginning the operation of castrating a female lamb, C. This 

 lamb is laid on its right side near the edge of the table D, E, in 

 such a manner that the head of the lamb F, should hang 1 off the 

 table. 



