44 



certain organs : in the male, the tejies, or Jiones^ for 

 the formation of the feminaljluid, and the penis, or 

 yard, for the difcharge of it. In the female, the 

 ovaria, which contain the rudiments of the future 

 animal ; and the uterus, or nvomb, into which it 

 pafles after impregnation. In this fituation it is re- 

 tained till it arrives at fufficient perfection to perform 

 the various fun<5lions neceffary to fupport life in the 

 world. This is called the period of gejlation, or 

 going with young, which differs in different animals, 

 according to theiff fize ; being longer in the large, and 

 Ihorter in the fmall. In the mare it takes up about 

 eleven months ; in dogs, about nine weeks, or from 

 lixty to fixty-three days. 



AGE OF THE HORSE AND DOG. 



Domeftic quadrupeds have all of them certain al- 

 terations that take place in their bodies at fixed pe- 

 riods of their life, by which their age may be afcer- 

 tained with confiderable prccifion. Oxen have a 

 temporaneous fet of horns, which give place, at three 

 years old, to a permanent pair, which produce a 

 circle every fuccceding year ; fo that by counting 

 three years for the point of either of the horns, and 

 a year for each circle, the age is gained. 



Deer acquire an additional branch to the palm of 

 the horn each year. 



