The _Dairy_ should have thick walls, and a brick or stone floor, so contrived that it may be washed with abundance of water every day, and yet have all the water run off by means of a waste-pipe or drain. There should be a kind of shelf of stone or slate round it, about four feet from the ground, and a table of similar materials in the centre, for the convenience of holding the vessels containing the milk and cream; and the window, if there is but one, should look towards the north, and be filled in with wire-cloth, so as to admit the air and yet exclude the flies and other insects. Besides this wirework, the window should also have either a sash frame with ground glass to open inside, or outside shutters, to exclude the sun in very hot weather, and the cold in winter. A thermometer should be kept in every dairy, and the heat should never be allowed to rise above 55°, or to fall below 50°. There should always be a scullery attached to the dairy containing a fireplace and boiler, as the vessels in which milk is kept require to be frequently washed with scalding-hot water to keep the milk sweet, and to prevent the butter and cream from acquiring an unpleasant taste.
Though I do not imagine your knowledge of a dairy to be very great, I suppose you are aware that the milk is drawn from the cow into a can or wooden pail, and brought into the dairy, where it is strained, and then put into shallow vessels or milk-pans, in which it is left for several hours in order that the cream may rise. Cows are generally milked twice a day; the morning's milk being skimmed in the afternoon, when the afternoon's milk is put into pans, or set up as the dairy-maids call it, and the afternoon's milk being skimmed in the morning. The cream, after what is wanted for the table has been taken out, is put into a large wide-mouthed jar or stein, and saved for butter. Cheese is generally made of new milk, which is put at once into the cheese-tub without setting it up in pans. The cheese-tub and cheese-press, the churn and all the apparatus for making butter, generally stand in the dairy scullery, where the operations of cheese and butter making are carried on.
Various kinds of vessels have been recommended for milk, and they have been made of lead, zinc, slate, and other materials. China are the best; but the old-fashioned wooden or earthenware pans appear to be the most general favourites; the only objections being, that wooden pans require a great deal of care to keep them clean, and that the leaden glaze of the earthenware pans is apt to be affected by the acid of the milk, if it should be kept till it becomes sour. No good dairy-maid, however, would ever keep milk in her pans till it became acid: and, if by any chance wooden vessels became tainted by having had in them sour or otherwise spoiled milk, they should be soaked in water in which a large piece of soda has been dissolved; and, if this does not sweeten them, they must be boiled in soda and water, and then immersed in pure cold water for a day or two.