liquid air

An almost colorle liquid ob tained by subjecting atmospheric air to great pre ure and depriving it of its natural heat. Liquid air is of about the consistency of water and has a slightly bluish tinge. A cubic foot of it represents 748 cubic feet of ordinary air. Its temperature is 312° F. below zero. When exposed to the air it gradually disappears to mingle with the air about it. Its intense coldne renders it very valuable as a refrigerating agent, and its expansive power under the influence of a normal temperature places its value above any other known agent as a motive force. Until recently the cost of its production has been so great as to make it unavailable for practical use, but in June, 1898. Mr. Charles E. Tripler, a New York scientist, announced that he had discovered a proce for producing it cheaply.