Fahr | Atmospheres. | |
* | 0 | 2.48 |
0.5 | 2.50 | |
* | 9.8 | 3.00 |
* | 18 | 3.50 |
* | 21 | 3.72 |
25.8 | 4.00 | |
* | 26 | 4.04 |
* | 32 | 4.44 |
* | 33 | 4.50 |
* | 32 | 4.44 |
* | 39.5 | 5.00 |
* | 41 | 5.10 |
* | 44 | 5.36 |
* | 45 | 5.45 |
45.8 | 5.50 | |
* | 49 | 5.83 |
* | 51.4 | 6.00 |
* | 52 | 6.10 |
* | 55 | 6.38 |
* | 56.5 | 6.50 |
* | 60 | 6.90 |
* | 61.3 | 7.00 |
* | 65.6 | 7.50 |
* | 67 | 7.63 |
69.4 | 8.00 | |
73 | 8.50 | |
76.8 | 9.00 | |
80 | 9.50 | |
* | 83 | 10.00 |
85 | 10.30 |
Arseniuretted Hydrogen.—This body, liquefied by Dumas and Soubeiran, did not solidify at the lowest temperature to which I could submit it, i. e. not at 166° below 0° Fahr. In the following Table of the elasticity of its vapour the marked results are experimental, and the others interpolated:—
Fahr | Atmospheres. | |
* | 73 | 0.94. |
-70 | 1.08 | |
* | -64 | -1.26 |
-60 | -1.40 | |
* | -52 | -1.73 |
-50 | -1.80 | |
-40 | -2.50 | |
* | -36 | -2.28 |
-30 | 2.84 | |
* | -23 | 3.32 |
-20 | 3.51 | |
-10 | 4.30 | |
* | -5 | 4.74 |
* | 0 | 5.21 |
* | 3 | 5.56 |
* | 10 | 6.24 |
* | 20 | 7.39 |
30 | 8.66 | |
* | 32 | 8.95 |
* | 40 | 10.05 |
* | 50 | 11.56 |
* | 60 | 13.19 |
The following bodies would not freeze at the very low temperature of the carbonic acid bath in vacuo (-166° Fahr.): —Chlorine, ether, alcohol, sulphuret of carbon, caoutchoucine, camphine or rectified oil of turpentine. The alcohol, caoutchoucine and camphine lost fluidity and thickened somewhat at -106°, and still more at the lower temperature of -166°. The alcohol then poured from side to side like an oil.
Dry yellow fluid nitrous acid when cooled below 0° loses the greater part of its colour, and then fuses into a white, crystalline, brittle and but slightly translucent substance, which fuses a little above 0° Fahr. The green and probably hydrated acid required a much lower temperature for its solidification, and then became a pale bluish solid. There were then