Annals of Philosophy, Or, Magazine of Chemistry, Mineralogy, Mechanics, Natural History, Agriculture, and the Arts, Volume 12Robert Baldwin, 1818 |
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acetate alcohol alkali ammonia analysis Annals of Philosophy appears ascertained atom azote barometer barytes Bergman Berzelius bodies boiling carbonic acid cetine chemical Chevreul Cloudy colour composed compound considerable contains copper crystals decomposed delphinic acid Delphinus dissolved distilled Ditto eclipse employed evaporated experiments fatty matter ferruretted formed fusible glass heat hydrogen hygrometer inches iron lime limestone litmus magnesia margaric acid margarine means memoir metal Metres Morn muriatic acid nature nearly nitric acid Noon observations obtained odour oleic acid oxide oxygen paper pearly matter peroxide pints platinum portion potash precipitate procured produced proportion protoxide quantity rain remarkable salt saponified showers soap soda soluble solution sorbate sorbic acid specific gravity spermaceti stearine strontian substance sulphate sulphuretted sulphuric acid super-margarate supposed tartaric temperature thermometer tion Tytler Vauquelin vegetable volume weight wind Woodhouselee yellow zinc
Popular passages
Page i - London, 1801-04. 427. *ANNALS OF PHILOSOPHY ; or Magazine of Chemistry, Mineralogy, Mechanics, Natural History, Agriculture, and the Arts. By Thomas Thomson. 16 vols., 8vo. London, 1813-'20. New series. [Edited by Richard Phillips.] 12 vols., 8vo. London, 1821-'26. United in 1827 with "the Philosophical Magazine and Journal.
Page 64 - Bradley's instrument, in any of the particulars mentioned above, the introduction of coloured and moveable objects, at the end of the reflectors, is quite peculiar to Dr. Brewster's instrument. Besides this, a circumstance highly deserving of attention, is the Use of two lenses and a draw tube, so that the action of the kaleidoscope is extended to objects of all sizes, and at all distances from the observer, and united, by that means, to the advantages of the telescope. JP...
Page 115 - Its oblong and pointed leaves, tough and alternate, are marked by lateral ribs, prominent at the lower surface, and parallel ; they are some of them ten inches long. We did not see the flower : the fruit is somewhat fleshy, and contains one, or sometimes two nuts. When incisions are made in the trunk of the...
Page 66 - This shews, in a most decisive manner, that Harris knew nothing of the kaleidoscope, and that he has not even improved the common catoptric cistula, which had been known long before. The principle of inversion, and the positions of symmetry, were entirely unknown to him. In the...
Page 62 - Sir, — The propositions I have given relating to the number of images formed by plane reflectors inclined to each other, contain merely the mathematical calculation of their number and arrangement. The effects produced by the kaleidoscope were never in my contemplation. My attention has for some years been turned to other subjects, and I regret that I have not time to read your Optical Treatise, which I am sure would give me great pleasure. I am, Sir, your obedient humble servant,
Page 60 - Jiied or placed loosely in a cell at the end of the instrument. When this idea was carried into execution, the kaleidoscope, in its simple form, was completed.
Page 72 - AFRICAN EXPEDITION. A letter from Sierra Leone mentions the return to that place of the scientific expedition for exploring the interior of Africa. "They were completely unsuccessful, having advanced only about 150 miles into the interior, from Rio Nunez. Their progress was there stopped by a chief of the country; and after unavailing endeavours, for the space of four months, to obtain liberty to proceed, they abandoned the enterprise, and returned.
Page 53 - In fig. 200 is also shown the manner in which the fire is made to act. The fuel rests on the grate-bars at B, and the flame and heated air, being reverberated from the part above the two first smaller cylinders, go under the third, over the fourth, under the fifth, over the sixth, under the seventh...
Page 59 - B. set himself to investigate the cause of the phenomenon, and in doing this he discovered the leading principles of the Kaleidoscope. He found that, in order to produce perfectly beautiful and symmetrical forms, three conditions were necessary. 1. That the reflectors should be placed at an angle, which was an even or an odd aliquot part of a circle, when the object was regular, and wholly included in the aperture ; or the even aliquot part of a circle when the object was irregular.
Page 59 - Philosophical Transactions for 1815, and honoured by the Royal Society of London with the Copley Medal, the reflectors were in some cases inclined to each other, and he had occasion to remark the circular arrangement of the images of a candle round a centre...