In Mr. Berckman's Farmer and Gar dener, there is a description of a spring house which is used as a conservatory. Over a bold spring a brick house has been erected, 24 feet in diameter, and arched overhead, with six feet of earth on the arch. In the center of the house is a pool 16 feet across and 4 feet deep; the capacity of the spring 15 gallons a minute. The temperature of the water is *62 degrees; that of the house is uniformly similar, although in extreme cold weather it has fallen to 55 degrees. The entrance to the house, six feet wide, is never shut, even during the coldest weather. Above and around the inner wall of the house are shelves, upon which numbers of very tender plants are placed, which are never watered, but remain in a most luxurious condition all winter. Begonias and other succulent plants of like character were in fine growth. It is suggested that the fortunate possessors of fine springs like this might use them to great advantage in building over them conservatories where water is made to do the duty of fire, as in the novel instance described.