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in our own country. A national examining and licensing board, under whatever name, whose require¬ ments shall be high enough to satisfy the demands of ar*y and every State in the Union, is a thing for which we may devoutly pray. LIQUID AIR. A few weeks ago an article on liquid air appeared in one of the magazines, and such extraordinary claims were made in regard to the possibilities and probabilities of this new material that not a few were convinced that the days of steam and electricity weredoi:10.1001/jama.1899.02450440046021 fatcat:jl2pe5whlfawhbv2c65mtqakpq