 | Thomas Arnold - Marine insurance - 1822 - 1008 pages
...Patrick, and on the same principles •with those of Dr. Halley. 1st, The mercury's rising in the tube, presages, in general, fair weather ; and its falling, foul weather, as rain, snow, hail, sleet, high winds, and heavy gales. 2d, In very hot weather the fall of the mercury indicates... | |
 | James Mitchell - Mathematics - 1823 - 666 pages
...all weathers. Mr. Patrick's Rules. These are esteemed the best of any general rules hitherto made : 1. The rising of the mercury presages, in general,...foul weather, as rain, snow, high winds, and storms. 2. In very hot weather, the falling of the mercury indicates thunder. 3. In winter, the rising presages... | |
 | Thomas Ignatius M. Forster - 1824 - 846 pages
...the mercury presages in general * See Forster's Works, sold by Harding, Mayor, and Lepard, London. z fair weather, and its falling, foul weather; as Rain, Snow, High Winds, and Storms. In very hot weather, the falling of the mercury indicates Thunder. In Winter the rising indicates Frost,... | |
 | John Claudius Loudon - 1825 - 1250 pages
...been found most useful in ascertaining the changes of the weather, by means of the barometer. 2341. The rising of the mercury presages, in general, fair...foul weather, as rain, snow, high winds, and storms. 2342. The tudden falling of the mercury foretele thunder, in very hot weather, especially if the wind... | |
 | Library - 1827 - 712 pages
...The following rules are usually given for this purpose; butthey are not to be implicitly relied on : 1. The rising of the mercury presages, in general,...higher in the middle than at the sides, it is a sign that the mercury is then in a rising state ; but if the surface be concave or hollow in the middle,... | |
 | Levi Washburn Leonard - New Hampshire - 1827 - 398 pages
...will descend one tenth of an inch for every one hundred and three feet that .the barometer ascends. When the surface of the mercury is convex, or stands...it is a sign the mercury is then in a rising state ; but if the surface be concave, or hollow in the middle, it is then sinking. In very- hot weather,... | |
 | Thomas Furly Forster - 1827 - 522 pages
...we are to infer fair or foul weather. Generally speaking, the rising of the mercury presages clear fair weather, and its falling, foul weather ; as rain, snow, high winds, and storms. In very hot weather, the falling of the mercury indicates thunder. In winter the rising indicates frost,... | |
 | George Mackenzie - Meteorology - 1829 - 124 pages
...inches and a half; and at St. Petershurgh it is three and one-third inches. Mr. Patrick's Rules. I. The rising of the mercury presages in general fair weather; and its falling, foul weather,—as rain, snow, high winds, and storms. II. In very hot weather, the falling of the mercnry... | |
 | Levi Washburn Leonard - Science - 1830 - 350 pages
...will descend owe tenth of an inch for every one hundred and three feet that the barometer ascends. When the surface of the mercury is convex, or stands...it is a sign the mercury is then in a rising state ; but if the surface be concave, or hollow in the middle, it is then sinking. In very hot weather,... | |
 | Library, John Baxter - Agriculture - 1830 - 614 pages
...may be considered as useful indications of the changes of the weather by means of the barometer : — 1. The rising of the mercury presages, in general,...foul weather, as rain, snow, high winds, and storms. 2. In very hot weather, the falling of the mercury indicates thunder. S. In winter the rising presages... | |
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... 1 . The rising of the mercury presages, in general, fair weather, and its falling foul •weather, as rain, snow, high winds, and storms. 
