Proceedings of the British Meteorological Society, Volume 2

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1865
 

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Page 180 - The surface on which the sun's rays here fall is known ; the quantity of mercury within the cylinder is also known ; hence we can express the effect of the sun's heat upon a given area, by stating that it is competent, in five minutes, to raise so much mercury, or so much water, so many degrees in temperature.
Page 204 - ... of the barometer at the time. There is another advantage in this manner of graduating over the former, that if a little of the mercury drops out it will give no error ; as the column will immediately rise out of the larger tube into the smaller, and become the same length as before ; but by the former scale the barometer would stand too high, until re-adjusted, which could only be effected by putting the same quantity of mercury in again. I have introduced Gay-Lussac's pipette into the centre...
Page 201 - Thus it is a law of the nature of water that under the mean pressure of the atmosphere at the level of the sea, it boils at 212° Fahrenheit.
Page 421 - These results, showing the whole decrease of temperature of the air from the earth up to 23,000 feet, differ very considerably from those with a clear sky, to be spoken of presently. The...
Page 429 - ... this time the motion of the air was six miles only. On April 6, the balloon left the Royal Arsenal, Woolwich, at 4h 8m PM : its correct path is not known, as it entered several different currents of air, the earth being invisible owing to the mist; it descended at Sevenoaks, in Kent, at...
Page 38 - The attention of foreign men of science has been much directed to the problem of terrestrial magnetism, and five sets of magnetographs, similar to those in operation at the Kew Observatory, have been already procured by foreign governments. These, however, will be placed in the northern hemisphere, and it is to be desired that some of our colonies in the southern hemisphere may come forward in order that by the next epoch of maximum disturbance (1869) there may be such a network of magnetic observatories...
Page 433 - Bucks, was balloted for and duly elected a Member of the Society. The names of Three Candidates for admission into the Society were read.
Page 179 - Into the cylinder this thermometer d, is introduced, the stem of which is protected by a piece of brass tubing. We thus obtain the temperature of the mercury. The flat end of the cylinder is to be turned towards the sun, and the surface thus presented is coated with lampblack.
Page 405 - It should always be remembered that the state of the air foretells coming weather, rather than shows the weather that is present — an invaluable fact, too often overlooked, that the longer the time between the signs and the change foretold by them, the longer such altered weather will last ; and, on the contrary, the less the time between a warning and a change, the shorter will be the continuance of such foretold weather.
Page 248 - Commission for inquiring into the state of the rivers, shores, and harbours of the United Kingdom, the duties of which office brought him into contact with a large number of our seamen and fishermen, in whose welfare he took unceasing interest from this period until the day of his death. He was subsequently engaged in an inquiry into the condition of our large fisheries on the north-east coast of Scotland. His able Report, and the clear plans of the different classes of fishing-boats which accompanied...

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