546
DR. A. SCOTT ON THE COMPOSITION OF WATER BY VOLUME.
Fig. 1.
| A, | Bulb for measuring volume of gas. |
| B, | Graduated tube calibrated for measuring residual volumes. |
| C, | Manometer tube. |
| D, | Narrow tube with mark. |
| EE, | Barometer. |
| F, | Standard metre scale divided into millimetres. |
| G, | Thermometer graduated in 150° C. |
| H, | Jar for mixing gases before explosion. |
| I, | Wooden block to support mercury trough. |
| J, | Tube for exploding gases under diminished pressure. |
| K, | Mercury trough of wood, varnished. |
| L, | Water tank, for maintaining temperature steady, with stirrer and levelling screws (contents = about 14 litres). |
| M1, M2, | Mercury reservoirs. |
| NO, NH, | Small mercury reservoirs for driving gases out of tubes into A and B. |
| O, | Tube, with silver oxide. |
| P, | Tube, with palladium. |
| R, S, | Geissler’s bulbs, with pure water. |
| T, | Geissler’s bulbs with pure sodium hydrate (from sodium and water). |
| U, | Tube for hydrogen to pass in at from generating vessel, but sealed up when palladium hydride is used. |
| VO, VH, | Gauges and safety valves with mercury covered with water for oxygen and hydrogen. 1, 2, 3, 4, 5, 6, 7, 8, and 9, safety taps with syrupy phosphoric acid. |
