In constructing a dairy, it is proper that such an excavation should be made as will leave the floor, which should be made of stone, two or three feet below the surrounding surface. The sides should be of brick or stone, and plastered; the walls high, and the windows made so as to shut out the light, and admit the air. The advantage of thorough ventilation and pure air is acknowledged by every one who has ever paid attention to the manufacture of butter, though it is a matter generally too little thought of, in the construction of the apartments for this purpose. It will be observed, that in the plan herewith submitted, an open space of two and a half feet has been provided for on both sides the dairy.To render the establishment as perfect as possible, the command of a good spring of water, which may be conducted through the dairy-room, is necessary; when that cannot be had, an ice-house in direct contact, (as in the accompanying plan,) and a good well of water convenient, form the best substitute.
The expense of such a house in this vicinity might be varied from fifteen hundred to three thousand dollars; according to the style of finish, the taste and ability of the owner. The main conveniences may be retained at the lowest estimate, by omitting the ornamental front.

