The Philosophical Magazine: Comprehending the Various Branches of Science, the Liberal and Fine Arts, Geology, Agriculture, Manufactures and Commerce, 31. kötetRichard Taylor and Company, 1808 |
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acrospire activity consumed alcohol alkali ammonia animal appear barley barrel barytes boat bodies boiled capstan carbonic acid cattle charcoal Cheltenham chemical chemists Cloudy colour considerable contained corn cosine crystals cubic inches date tree decomposed dissolved distilled effect employed equal equilibrium evaporated Experiment Fair floors fluid formed frustums gallon grains heat Hertfordshire hydrogen inflammable insoluble instance iron lime water liquor machine magnesia malic acid malt matter means ment metallic method mixed mixture momentum of activity mould movement muffle muriatic acid nature nitric acid observed obtained operation oxalate of ammonia oxalate of lime oxalic acid oxide oxygen phosphate pollen portion potash precipitate present produced proportion quantity remark rendered respect saline salt silex Society soliciting forces soluble solution species specific gravity strontian substance sufficient sugar sulphuretted sulphuric acid temperature Tilloch tion vegetation velocity vessel weight
Népszerű szakaszok
74. oldal - In 1803 the author was gradually led to those primary laws which seem to obtain in regard to heat and to chemical combinations, and which it is the object of the present work to exhibit and elucidate.
279. oldal - It is perhaps too much to hope, that the geometrical arrangement of primary particles will ever be perfectly known ; since even admitting that a very small number of these atoms combining together would have a tendency to arrange themselves in the manner I have imagined; yet, until it is ascertained how small a proportion the primary particles themselves bear to the interval between them, it may be supposed that surrounding combinations, although...
278. oldal - If there be three, they might he arranged with regularity at the angles of an equilateral triangle in a great circle surrounding the single spherule; but in this arrangement, for want of similar matter at the poles of this circle, the equilibrium would be unstable, and would be liable to be deranged by the slightest force of adjacent combinations...
275. oldal - ... red heat ; and it will be found to have parted with exactly half its gas ; for the gas extricated from it in the same apparatus will be found to occupy exactly the same space, as the quantity before obtained from two grains of fully saturated carbonate. Sub-carbonate of Soda. Exp. 2. A similar experiment may be made...
113. oldal - ... the lower part of the dress, the flames meeting additional fuel, as they rise, become more powerful in proportion ; whereby the neck and head, being more exposed than other parts to the intense and concentrated heat, must necessarily be most injured. In a case of this kind, where the sufferer happens to be alone, and cannot extinguish...
324. oldal - ... the 3d, from the chasms before described, and threw out a quantity of lava, which travelled on slowly towards Vellas. The fire of those small craters subsided, and the lava ceased running...
323. oldal - ... were occasionally heard from the bowels of the earth, and earthquakes were frequent. After remaining here about ten minutes, we returned to town, the inhabitants had mostly quitted their houses, and remained in the open air, or under tents. We passed the night at Vellas, and the next morning went by water to Ursulina, a small seaport town two leagues south of Vellas, and viewed that part of the country covered with the cinders before mentioned, and which have turned the most valuable vineyards...
237. oldal - Student's views forwarded. — To these none but Pupils can be admitted. Spacious Apartments, thoroughly ventilated, and replete with every convenience, are open all the Morning, for the purposes of Dissecting and Injecting, where Mr. Brookes attends to direct the Students, and demonstrate the various parts as they appear on Dissection.
278. oldal - For instance, if we suppose the limit to the approach of particles to be the same in all directions, and hence their virtual extent to be spherical (which is the most simple hypothesis); in this case, when different sorts combine singly there is but one mode of union. If they unite in the proportion of two to one, the two particles will naturally arrange themselves at opposite poles of that to which they unite. If there be three, they might be arranged with regularity, at the angles of an equilateral...
274. oldal - I had observed are but particular instances of the more general observations of Mr. Dalton, that in all cases the simple elements of bodies are disposed to unite atom to atom singly, or if either is in excess, it exceeds by a ratio to be expressed by some simple multiple of the number of its atoms.