. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. RECENT PROGRESS IN PHYSICS. 379. "Take next ad ro]i of strong solution of miiriateoflime; being electrified, a part will probably be dissipated, but a con- siderable portion, if the electricity be not too powerful, will remain, forming a conical drop, (fig. 74,) accompanied by a strong wind. If glow be produced the drop will be smooth on the surface. If a short low brush is formed a minute tremulous motion of the liquid will be visible
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. RECENT PROGRESS IN PHYSICS. 379. "Take next ad ro]i of strong solution of miiriateoflime; being electrified, a part will probably be dissipated, but a con- siderable portion, if the electricity be not too powerful, will remain, forming a conical drop, (fig. 74,) accompanied by a strong wind. If glow be produced the drop will be smooth on the surface. If a short low brush is formed a minute tremulous motion of the liquid will be ; " With a drop of water the effects were of the same kind, and were best obtained when a portion of gum water or syrup hung from a ball, (fig. 75.) When the machine was worked slowly a fine, large, quite conical drop, with concave lateral outline and a Fig. 75. small rounded end, was produced, on which the glow appeared, whilst a steady wind issued from the point of the cone of sufficient force to depress the surface of uninsulated water lield opposite to the termination. When the machine v/as worked more rapidly some of the water was driven off, the smaller pointed portion left was roughisli on the surface, and the sound of successive brush discharges was heard, Witb still more electricity, more water was dispersed; that which re- mained was alternately elongated and contracted,'"' and "a stronger brush discharge was heard. Whea water from beneath was brought towards the drop, it did not indicate the same regular, strong, contracted current of air as before; and when the distance was such that sparks passed the water beneath was attracted rather than driven away, and the current of air ;—(1584.) " That the drop, when of water, or a better conductor than water, is formed into a cone principally by the current of air, is shown, amongst other ways, thus: A sharp point being held opposite the coni- cal drop, the latter soon lost its pointed
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