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Show For Thawing Motor Engines. Prof. ChurleH A. Rohb of the University Univer-sity of AUierttt, It la announced, has discovered an ether mixture which solves the problem of matting motor engines i intciiaely cold weather. Opportunity for a final test of the preparation came during a recent cold spell when the mercury fell far below ' gero. A LIberty-12 vtor of 400 horsi power was left outdoors all night and was Immovably trii by morning. The actual lime takeL to start the en-gjne en-gjne with the new mixture was seven minutes. When the experiments were N'gun last year, it took an hour and a half to start the same engine with the mercury only live degrees below, |