OF RADIANT HEAT THROUGH DIFFERENT BODIES.
29
| Table II.—continued. | ||
| Deviations of the galvanometer, |
Rays transmitted. | |
| ° | ||
| Nitric acid (pure and colourless) | 5·36 | 15 |
| Alcohol (absolute and colourless) | 5·30 | 15 |
| Hydrate of potassium (colourless) | 4·63 | 13 |
| Acetic acid (rectified, colourless) | 4·25 | 12 |
| Pyroligneous acid (of a slightly brownish colour) | 4·28 | 12 |
| Sugared water [eau sucrée] (colourless) | 4·20 | 12 |
| Alum water (colourless) | 4·16 | 12 |
| Salt water (colourless)[1] | 4·15 | 12 |
| White of eggs (slightly yellowish) | 4·00 | 11 |
| Distilled water | 3·80 | 11 |
| Table III.—Crystallized bodies. Common thickness 2ᵐᵐ·62. | ||
| Deviations of the galvanometer, |
Rays transmitted. | |
| ° | ||
| Mirror-glass | 21·60 | 62 |
| Rock salt (diaphanous) | 28·46 | 92 |
| Iceland spar (diaphanous) | 21·80 | 62 |
| Another species (diaphanous) | 21·30 | 61 |
| Rock crystal, colourless (diaphanous) | 21·64 | 62 |
| Rock crystal, smoky (diaphanous and very decidedly brown) | 20·25 | 57 |
| Brazil topaz, colourless (diaphanous) | 19·18 | 54 |
| Carbonate of lead (diaphanous) | 18·35 | 52 |
| White agate (translucid) | 12·48 | 35 |
| Sulphate of barytes (veined, dully diaphanous) | 11·72 | 33 |
| Emerald (diaphanous, of a light blue) | 10·16 | 29 |
| Yellow agate (translucid, yellow) | 10·10 | 29 |
| Borate of soda (translucid) | 9·87 | 28 |
| Green tourmaline (diaphanous, green) | 9·54 | 27 |
| Adularia (diaphanous, dull, veined) | 8·30 | 24 |
| Sulphate of lime (diaphanous) | 7·15 | 20 |
| Fluate of lime (diaphanous, dull, veined) | 5·40 | 15 |
| Citric acid (diaphanous) | 5·15 | 15 |
| Sardoine (translucid) | 4·98 | 14 |
| Carbonate of ammonia (diaphanous, dull, striated) | 4·50 | 13 |
| Tartrate of potash and soda (diaphanous) | 4·40 | 12 |
| Alum, crystal (diaphanous) | 4·36 | 12 |
| Sulphate of copper (strongly diaphanous, blue) | 0·00 | 0 |
- ↑ In this solution we used very diaphanous pieces of rock salt; the same may be said of the solution immediately preceding—the water was completely saturated with the alum.
