[AS.] A white fluid secreted in the mammary glands of the females of all mammals. When examined under the microscope, milk is seen to consist of a clear fluid, filled with round floating balls of fat of very minute size, each one enclosed in a separate film or thin skin of albumen. When milk has stood for some time these balls of fat rise to the surface, and form a layer of cream. When cream is churned the cases of the balls are broken, and the fat runs together and makes butter Skimmed milk is that which remains after the cream is removed. Condensed milk is prepared from that of the cow, sweetened with sugar and boiled down until the water is out of it, thus forming a thick, sweet paste, which is sealed up in tin cans.
MILK UNDER THE MICROSCOPE