The Philosophical Magazine: Comprehending the Various Branches of Science, the Liberal and Fine Arts, Geology, Agriculture, Manufactures and Commerce, Volume 30

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Richard Taylor and Company, 1808 - Physics


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Page 241 - The lead-coloured mass has been described already, and constitutes by far the greater part of the stone. After being wet and exposed to the air, the stone becomes covered with numerous reddish spots, which do not appear in a fresh fracture, and arise manifestly from the rusting of the iron. 5. There are a few instances of matter dispersed irregularly through the stone, which are considered as intermediate between pyrites and malleable iron.
Page 238 - Coming to the place, he found a great mass of fragments of a strange-looking stone, and immediately called for his wife, who was second on the ground. Here were exhibited the most striking proofs of violent collision. A ridge of micaceous schistus, lying nearly even with the ground, and somewhat inclining, like the hill, to the south-east, was shivered to pieces...
Page 238 - Seeley went into his field to look after his cattle. — He found that some of them had leaped into the adjoining enclosure, and all exhibited strong indications of terror. Passing on, he was struck with surprise at seeing a spot of ground which he knew to have been recently turfed over, all torn up, and the earth looking fresh, as if fvom recent violence.
Page 239 - From the best information which we could obtain of the quantity of fragments of this last stone, compared with its specific gravity, we concluded that its weight could not have fallen much short of 200 pounds. All the stones, when first found, were friable, being easily broken between the fingers ; this was especially the case, where they had been buried in the moist earth ; but by exposure to the air, they gradually hardened.
Page 292 - Astronomy," which appeared in 1814, and is dedicated to Maskelyne, and also in the fourth edition of the "Elements of Astronomy," Cambridge, 1816. The article is entitled " A new method of computing the effect of parallax, in accelerating or retarding the time of the beginning or end of a transit of Venus or Mercury over the sun's disc, by Nevil Maskelyne, DD, FRS, and AstronomerRoyal.
Page 235 - Burr found to be still warm to his hand. There was reason to conclude, from all the circumstances, that this stone must have weighed about twenty or twenty-five pounds. Mr. Burr had a strong impression that another stone fell in an adjoining field, and it was confidently believed that a large mass had fallen into a neighbouring swamp, but neither of these had been found.
Page 327 - ... kept in the water from six to eight days. They are known to be ready, when the bark separates easily from the pith. It is then taken out of the water, and a man, taking it up by handfuls, beats them on the ground, occasionally washes them until they be clean ; and at the same time picks out with his hand the remainder of the pith, until nothing except the bark be left. This is then dried, and, being taken up by handfuls, is beaten with a stick to separate and clean the fibres. The hemp is then...
Page 235 - Burr was within 50 feet, and immediately searched for the body, but, it being still dark, he did not find it till half an hour after. By the fall, some of it was reduced to powder, and the rest of it was broken into very small fragments, which were thrown around to the distance of 20 or 30 feet. The rock was stained at the place of contact with a deep lead colour.
Page 221 - English glue, dissolved in •water, and beat them together with a hammer, till they be thoroughly united ; which requires the labour of two persons for a whole day. The mass is then cut into small cakes, and dried in the shade. These cakes can at any time be dissolved in water, and spread thin with a hair brush on common writing paper. The paper must...
Page 232 - ... adjoining his house, and had an opportunity of witnessing the whole phenomenon. From him the account of the appearance, progress, and explosion of the meteor is principally derived. The morning was somewhat cloudy. The clouds were dispersed in unequal masses; being in some places thick and opaque, and in others fleecy, and partially transparent. Numerous spots of unclouded sky were visible, and along the Northern part of the horizon, a space of 10 or 15 degrees was perfectly clear.

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