2 MILK [i 



8 inches in depth (Fleischmann). These milk-glands 

 are provided with outlet tubes, which are commonly 

 known as the teats. As a rule, each milk-gland is 

 provided with two teats, but sometimes with three ; 

 the third, when present, however, being in what is 

 scientifically termed a "rudimentary form." The 

 two glands are separated from one another by a 



FIG. 1. GLAND LOBULES. Magnified 60 times, e, Outlet tube. 

 (Fiirstenberg.) 



fibrous partition, running longitudinally, one of the 

 chief functions of which is to support the udder. 

 Each gland may be described as made up of a group 

 of glandular structures, of different sizes, which are 

 known as lobes, lobules, and alveoli, and each of 

 which is smaller than the preceding one. The size 

 of the alveoli varies from '0047 to '0078 of an inch 

 in length, and from -0035 to '0043 of an inch in 

 breadth (Fleischmann). 



