546
DR. A. SCOTT ON THE COMPOSITION OF WATER BY VOLUME.
Fig. 1.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c2/On_the_Composition_of_Water_by_Volume%2C_Figure_1.png/500px-On_the_Composition_of_Water_by_Volume%2C_Figure_1.png)
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. |