Archive image from page 355 of Dairy farming being the. Dairy farming : being the theory, practice, and methods of dairying dairyfarmingbein00shel Year: 1880 iyHE production of milk in the ' system of an animal is at once one of the most neces- sary as it is one of the most 1 curious processes in the eco- nomy of Nature. That the milk from which we make butter comes from the cow we all know, and we are equally familiar with the fact that it is primarily derived from the food \\hich the cow eats. These two facts taken together place the cow in the josition of a machine—a living one it is tru
Archive image from page 355 of Dairy farming being the. Dairy farming : being the theory, practice, and methods of dairying dairyfarmingbein00shel Year: 1880 iyHE production of milk in the ' system of an animal is at once one of the most neces- sary as it is one of the most 1 curious processes in the eco- nomy of Nature. That the milk from which we make butter comes from the cow we all know, and we are equally familiar with the fact that it is primarily derived from the food \\hich the cow eats. These two facts taken together place the cow in the josition of a machine—a living one it is true, but still a machine, which, receiving the raw material of grass or hay or corn, transforms it into a pro- duet which is indispensable to the welfare of mankind. Or we may liken the cow's body to a laboratory in which crude materials, some of which would not be of any service in them- selves in sustaining human life, are reduced to a form in which they are of the greatest possible service. It is v.'orth while to inquire a little how this is done. The most advanced investigations into the structure of the mammal-gland reveal to us that the interior of a cow's udder is composed first of all of a wonderful ramification of ligaments and tissue which, interlacing each other, support the udder in position; about in this structure blood- veins pass to and fro, and milk-duets, cavities, glandules, lobules, and vesicles are distributed. In Fig. 14:3 we have an illustration of the network which is interwoven in the milk-glands of the udder, and which sustains tliem i/i sllu. If we pass a pliable probe up the inside of the teat it traverses a du'l, or tube, which opens into a reservoir comnuinicating with other reservoirs or with ducts ; following one or other of these duets, the probe filially comes to a small saccular cavity, and it goes no farthei'. Within this cavity and its vesicles and cells the fats of milk are produced, and there are numbers of similar cavities. In Fig. 111
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