By one of these processes, exclusion of the atmosphere and thorough boiling, we may preserve any fruit or vegetable, so as to have an abundance, nearly as good as the fresh in its season, the whole year, and that at a trifling expense. All fruits and vegetables may also be preserved by drying. By being properly dried, the original aroma can be mostly retained. The essentials in properly drying are artificial heat and free circulation of the air about the drying articles. Fruit dried in the sun is not nearly so fine as that dried by artificial heat. An oven from which bread has just been taken is suitable for this purpose; but a dry-house is better. A tight room, with a stove in the bottom, and the fruit in shallow drawers, put in from the outside, serves a good purpose. Construct the room so as to give a draft, the heated air passing out at the top, and the process of drying will be greatly facilitated, and the more rapid the process, without cooking the fruit, the better will be its quality. This process is applicable to all kinds of vegetables. Roots, as beets, carrots, parsnips, or potatoes, should be sliced before drying. The object in drying the latter articles would be to afford the luxury of good vegetables for armies and ships' crews, in distant regions, and in climates where they are not grown. Milk can be condensed and preserved for a long time, and, being greatly reduced in quantity, it is easily transported. It is not generally known in the country that Mr. Gail Borden, of New York, has invented a method of condensing milk, fresh from the cow, so that it will perfectly retain all its excellences, including the cream, and by being sealed up in tin cans, as above, may be kept for many months. The milk and the process of condensation have been scientifically examined by the New York Academy of Medicine, and pronounced perfect, and of great value to the world. We have used the condensed milk, which was more than a month old; it had been kept in a tin can without sealing and without ice, but in a cool place. It was sweet and good, differing in no respect from fresh milk from the cow, except that the heat employed in condensing it gave it the taste of boiled milk. If kept in a warm place, and exposed to the atmosphere, it may sour nearly as soon as other milk: but it may be sealed up and kept cool so as to be good for a long time. The condensation is accomplished by simple evaporation of the watery part, in pans in vacuo. No substance whatever is put into the milk. Four gallons of fresh milk are condensed into one. When wanted for use, the quantity desired is put into twice the quantity of water, which makes good cream for coffee; or one part to four of water makes good new milk; and one part to five or six makes a better milk than that usually sold in cities. Steamers now lay in a supply for a voyage to Liverpool and return, and on arrival in New York, the milk is as good as when taken on board. The advantages will be numerous.