would instantly liquefy, and would spread itself as a thin film over the surface of each ball of that white, hot mass of fleeing metal, now to all essential conditions as uniform as a bar of iron. Madly increase the velocity to millions upon millions of miles per second, and the heat will disappear gradually as did the sound, while the bright light will pass backward successively through the primary shades of color that are now known to man, beginning with violet, and ending with red, and as the red fades away the train of bullets will disappear to the sense of man. Neither light nor sound now accompanies the volley, neither the human eye nor the human ear can perceive its presence. Drop a pane of glass or any other object edgewise through it, and it gives to the sense of man no evidence; the molecules of the glass separate from in front to close in from behind, and the moving train passes through it as freely as light, leaving the surface of the glass unaffected." [10] A scientific critic seems to think that the shrill cry would cease instantly and not gradually. However, science has been at fault more than once, and I do not care to take liberties with this statement.--J. U. L. "Hold," I interrupted; "that would be as one quality of matter passing through another quality of matter without disturbance to either, and it is a law in physics that two substances can not occupy the same space at the same time." "That law holds good as man understands the subject, but bullets are no longer matter. Motion of mass was first changed into motion of molecules, and motion of molecule became finally augmented into motion of free force entities as the bullets disintegrated into molecular corpuscles, and then were dissociated, atoms resulting. At this last point the sense of vision, and of touch, ceased to be affected by that moving column (neither matter nor force), and at the next jump in velocity the atoms themselves disappeared, and free intangible motion resulted--nothing, vacancy.