DAIRYING 



47 



between the sections of one gland and that some of the milk in the 

 second quarter milked will be drawn away through the first one 

 milked. 



Condition of Milk in the Udder. 



205. Milk ready formed in a liquid condition is not stored 

 up in the udder like water in a sponge for if this was the case, there 

 would be no change in the milk from the first to the last of a 

 milking. It would all be of the same richness from the beginning 

 to the end of the milking. Neither is milk filtered or diffused 

 directly from the blood, because the constituents of milk such as 

 casein and milk sugar are never found ready formed in the blood. 



Milk -cis- 

 tern and Outlet Tube 

 of Mi Ik -gland, laid- 

 open. Two-thirds of 

 natural slzs. 



a, Basis qf teat; Z>, 

 upper end of milk- 

 cistern ; d, lower 

 end of same and 

 ; upper end of teat; 

 ' c', dilatation ? 6f 

 canal of the teat; 

 /, rosette on end 

 of lower portion 



. of canal of teat; 

 h, small, and o, 

 large ^land-ducts, 

 (Furslenberg.) 



_ r f. 



PLATE 7. 



I\ ilk is the product of active gland cells, a collection of which is 

 called a gland lobule and these cells are capable of changing the 

 raw materials of the blood into the peculiar constituents of milk. 

 The characteristic composition and richness of each cow's milk is 



