Proceedings of the British Meteorological Society, Bind 5Taylor & Francis., 1871 |
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amount of evaporation anemometer appeared April arch atmosphere August Auriga aurora auroral light average barometer bright Broadstairs bulb Cassiopeia centre Cepheus Chiswick clouds colour cylinder December dew-point diff difference direction east elastic force experiments fall of rain February feet gauge Greenwich Hawkhurst height highest horizon inches instruments JAMES GLAISHER January July June largest number Leonis lowest Lyræ magnetic March Mauritius maximum mean daily mean temperature meteor Meteorological Meteorological Observations Meteorological Society miles Miller minimum month moon Natal nearly night November October paper path period Pietermaritzburg pressure radiant-point rainfall Ramsgate recorded red light Redruth remarkable Royal Observatory Scilly Isles seen September Sickle south-west stars stations streak streamers summer surface Table temperature Thermo thermometers tion Ursa Major values vapour westward white light white streamers wind zenith ΙΟ ΟΙ دو وو
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Side 298 - The levers are raised a few degrees and then fall back to their normal position ready to be taken up by the next pin, and so on. The recording apparatus consists of a train of wheels and pinions working in a frame or between two brass plates, the arbors of which project through a dial-plate whereon the circles and figures are engraved and carry the hands. These wheels are driven by a weight attached to a line wound round a barrel, and a...
Side 49 - Noon 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM...
Side 81 - Whilst I was attending to this appearance, the whole visible hemisphere of the heavens became covered with a light palish vapour, as I at first imagined it to be. It was disposed in longitudinal streaks, extending from the west, by the zenith, and all along the sky towards the east. On examining this appearance more narrowly, I found it to be a true aurora borealis, with all the characters which distinguish that meteor when seen by night, excepting that it was now entirely pale and colourless. The...
Side 80 - ... needle, where at their union they formed a small thin and white canopy, similar to the luminous one exhibited by an aurora in the night. These rays coruscated or shivered from the horizon to their point of union. These effects were distinctly seen by three different people, and their point of union marked separately by each of them...
Side 304 - ... highly compressed air, which acts as a spring to compress the mercury and cause it to rise in the opposite tube, on the contraction (from cold) of the spirit. A steel bar enclosed in glass, with flattened projecting glass ends, is enclosed in each limb of the siphon above the mercury, the flattened end preventing the mercury from passing them : these, from their weight, would rest on the mercury; but each has a fine hair tied to its upper extremity and bent against the interior of the tube, to...
Side 189 - His last appointment was on the 2 ist of October, 1827, to the command of the Britomart, 10. The Britomart was first employed and intended for the Channel service under the order of the Commander-in-Chief, the Earl of Northesk, at Plymouth. She accompanied the squadron of ships escorting Don Miguel to Lisbon in the early part of 1828. In consequence of the revolution that followed in Portugal on Don Miguel declaring himself absolute, the Britomart was stationed at and off Oporto to watch the British...
Side 190 - Peer of France, who survives him, and by whom he has two sons and a daughter» From the time he attained his Post-rank to the time of his death he devoted himself to scientific pursuits. He was elected a member of the Royal Astronomical Society in 1836. At a very early period he took an active interest in its administration, and after being on the Council for some time, was elected one of the honorary secretaries in February 1848, an office which he filled until 1858, when he accepted that of Foreign...
Side 202 - The formation of dew was found to depend solely on the temperatures of the bodies upon which it was deposited, and it never appeared upon them till their temperatures had descended below that of the dewpoint in their locality, as found by observations of a dry and wet-bulb thermometer placed in their vicinity.
Side 81 - ... the prismatic colours ; thence diffusing themselves, the rays converged towards the zenith, and diverged again towards every quarter of the horizon ; and the coruscations were equally instantaneous, and as distinctly perceptible as they are by night. " ' This appearance continued for more than twenty minutes, when it gradually vanished, giving place to thin scattered vapours, which, towards sunset, began to overspread the sky. Through the ensuing night, I could not discern the smallest trace...
Side 311 - ... ascertain the time required by one of the Miller pattern to take up temperature, removed one suddenly from one tub to the other (from the cold to the warmer) and then back. To take up 12° of heat it took seven minutes; the first 6° (as might be expected) wore taken up more rapidly than the second.