Admiral Fitzroy&rsquos Words For The Scale
The graduation of inches and decimals are placed in this barometer on the right-hand side of the tube; and on a similar piece of porcelain, on the left-hand, are engraved, as legibly as they are expressed succinctly, the following words, of universal application in the interpretation of the barometer movements:—
| RISE
| Â | FALL |
| FOR | Â | FOR |
| COLD | Â | WARM |
| DRY | Â | WET |
| OR | Â | OR |
| LESS | Â | MORE |
| WIND. | Â | WIND. |
| ——— |  | ——— |
| EXCEPT | Â | EXCEPT |
| WET FROM | Â | WET FROM |
| COOLER SIDE. | Â | COOLER SIDE. |
Reverting to the explanation of the words on the “Coast” barometers (at page 14), and comparing and considering them as given for northern latitudes, and as they must be altered for southern latitudes, it will be perceived, that for all cold winds the barometer rises; and falls for warm winds. The mercury also falls for increased strength of wind; and rises as the wind lulls. Likewise before or with rain the column of mercury falls; but it rises with fine dry weather. Putting these facts together, and substituting for the points of the compass the terms “cold” and “warm,” the appropriateness of the words on the scale of this barometer is readily perceived. These concise and practical indications of the movements in the barometer are applicable for instruments intended for use in any region of the world, and are in perfect accordance with the laws of winds and weather deduced by Dové and other meteorologists. There is nothing objectionable in them, and being founded upon experience and the deductions made from numerous recorded observations of the weather in all parts of the world, as well as confirmed by the theories of science, they may consequently be considered as generally reliable. They involve no conjecture, but express succinctly scientific principles.
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