This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1873 edition. Excerpt: ...liquor to be effected, it is, of course, much preferable to filtration. 358. Filtering Paper, a stout roll put into a tall narrow jar, with some water coloured blue by indigo dye, No. 204 b, affords a good example of the ascent of liquids by capillary attraction. 358. a. Filtering paper, per quire. Price 1s. 6d. b. Jar, on foot, 10 by 2 inches. Price 1s. Pressure Of L1qu1ds Proport1onate To Depth. 359. Particles of fluid, on escaping from an orifice, possess the same velocity as if they had fallen freely in vacuo from a height equal to that of the fluid surface above the centre of the orifice.--Torricelli. 360. Spouting Jars for illustrating Torricelli's Theorem.--Japanned tin-plate, form of fig. 360, size 20 inches high, 6 inches diameter, with necks of glass tube, and stoppers. A. With two necks. Price 6s. B. With three necks (fig. 360). Price 7s. 6d. If the vessel (fig. 360) is filled with water up to the mark D, and the apertures, a, b, c, are afterwards opened, the water will escape from them with very different velocities. At a the water will possess the same velocity as if its particles had fallen in vacuo from D to a; at b and c the escaping currents will possess the same velocities as if the liquid composing them had fallen from D to 6, and from D to c. Observe that the metal necks of the apparatus are closed by corks, that the corks are perforated and pierced by small glass tubes, and that these tubes are closed by small stoppers of caoutchouc or cork till the time comes for showing the experiments. The P1pette. 361. The Pipette has been long used in chemical laboratories for transferring small quantities of different liquids from vessel to vessel. During the last thirty years it has derived increased importance inconsequence of...