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Scientific American, Vol. 61, No. 21 (1889) (1889)
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e interposed a wedge-shaped piece which was Starting from this, Mr. Girard had seen that there ward, tends to lift the hearer or slide which rests on heldin place by a spring that allowed it to slide freely would be considerable saving in entirely suppressing the rail. The water then tends to… … was not accorded him until Fig. 1.—GIRARD'S the train and exerts its © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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