Philosophical Transactions of the Royal Society of London, Volumen101

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W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1811
 

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Página 270 - Way, or the closely compressed clusters of stars of which my catalogues have recorded so many instances, this supposed equality of scattering must be given up. We may also have surmised nebulae to be no other than clusters of stars disguised by their very great distance, but a longer experience and better acquaintance with the nature of nebulae will not allow a general admission of such a principle, although undoubtedly a cluster of stars may assume a nebulous appearance when it is too remote for...
Página 269 - A KNOWLEDGE of the construction of the heavens has always been the ultimate object of my observations, and having been many years engaged in applying my forty, twenty, and large ten feet telescopes, on account of their great...
Página 277 - ... third dimension of it may be far beyond the reach of our telescopes ; and when these considerations together are added to what has been said in the foregoing article, it will be evident that the abundance of nebulous matter diffused through such an expansion of the heavens must exceed all imagination. " By nebulous matter I mean to denote that substance, or rather those substances which give out light, whatsoever may be their nature, or of whatever different powers they may be possessed.
Página 321 - In 1 784, 1 began to entertain an opinion that the star was not connected with the nebulosity of the great nebula of Orion, but was one of those which are scattered over that part of the heavens. In 1801, 1806, and 1810, this opinion was fully confirmed by the gradual change which happened in the great nebula, to which the nebulosity surrounding this star belongs. For the intensity of the light about the nebulous star had by this time been considerably reduced...
Página 191 - In five minutes after the application, she lay on,. one side insensible, with slight spasmodic actions of the muscles. At the end of eleven minutes she retched, but did not vomit. In a quarter of an hour she appeared to be recovering. I repeated the application of the poison, and she was again seized with violent convulsions, and became insensible, breathing at long intervals ; and in two minutes from the second application respiration had entirely ceased, and she was apparently dead. On opening...
Página 37 - By repeating this process once in five seconds, the lungs b.'ing each time fully inflated with fresh atmospheric air, an artificial respiration was kept up. I then secured the blood-vessels in the neck, and removed the head, by cutting through the soft parts above the ligature, and separating the occiput from the atlas. The heart continued to contract, apparently with as much strength and frequency as in a living animal. I examined the blood in the different sets of vessels...
Página 36 - On some Physiological Researches respecting the Influence of the Brain on the action of the Heart, and on the Generation of Animal Heat," for which a Copley medal, " the highest honour the Society has to bestow,
Página 316 - IV. 55, when it was in a state of diffusion, took up a space of 10' in every cubical direction of its expansion ; then, as we now see it collected into a globular compass of less than one minute, it must of course be more than nineteen hundred times denser than it was in its original state. This proportion of density is more than double that of water to air.
Página 379 - From these circumstances it was rery plain, that this gentleman, at the same time that his pupils had become dilated, and his upper eye-lids paralytic, had acquired the sight of an old man, by losing suddenly the command of the muscles by which the eye is enabled to see near objects distinctly...
Página 270 - I must freely confess that by continuing my sweeps of the heavens, my opinion of the arrangement of the stars and their magnitudes, and of some other particulars, has undergone a gradual change ; and, indeed, when the novelty of the subject is considered, we cannot be surprised that many things, formerly taken for granted, should on examination prove to be different from what they were generally but incautiously supposed to be. For instance, an equal scattering of the stars may be admitted in certain...

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