A System of Chemistry, in Four Volumes, Volume 3Baldwin, Cradock, and Joy, 1817 |
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A System of Chemistry: In Four Volumes, Volume 3 Thomas Thomson,Thomas Cooper No preview available - 2015 |
Common terms and phrases
alkalies Alumina ammonia analysis antimony Arsenic atoms azote barytes Beitrage blow-pipe bodies Book borax Brittle Brochant brown carbonic acid Chap Chim Colour combination common conchoidal constituents contains copper cross fracture crystals dissolved earth Easily frangible edges elastic evaporated Floetz foliated following table exhibits four-sided Fracture perfect Fragments gases Gehlen's Jour glimmering grains granular distinct concretions green greenish grey greyish Haüy hitherto hornblende hydrogen Ibid Internal lustre shining Jameson Kirwan Klaproth liquid lustre dull lustre glistening magnesia manganese Massive melts mercury metallic mineral occurs mixed muriatic acid nitrate nitric acid octahedron Opaque Oxide of iron oxygen particles Phosphoric potash precipitate primitive form proportion quantity quartz resinous rhomboidal salt Sectile Semihard sharp-edged Silica silver slaty soda Soft solution sometimes spar Specific gravity specimen splintery stone Streak Strontian Subsp subspecies substances sulphate of lime sulphureted sulphuric acid Translucent uneven vapour Vauquelin vitreous Werner yellow yellowish
Popular passages
Page 193 - This noxious matter is in many cases readily distinguished by the peculiarly disagreeable smell which it communicates to the air. No doubt this matter differs according to the diseases which it communicates, and the substance from which it has originated. Morveau lately attempted to ascertain its nature ; but he soon found the chemical tests hitherto discovered altogether insufficient for that purpose. He has put it beyond a doubt, however...
Page 572 - The psendo-volcanic consist of minerals altered in consequence of the burning of beds of coal situated in their neighbourhood. Porcelain jasper, earth slag, burnt clay, columnar clay-iron stone, and perhaps also polishing slate, are the minerals which have been thus altered. The real volcanic minerals are those which have been thrown out of the crater of a volcano. They are of three kinds ; 1. Those substances which, having been thrown out from time to time, have formed the crater of the mountain:...
Page 194 - Nitric acid may be attended with some inconvenience, because it is almost always contaminated with nitrous gas. Muriatic acid and oxymuriatic acid are not attended with these inconveniences ; the last deserves the preference, because it acts with greater energy and rapidity. All that is necessary is to mix together two parts of common salt with one part of the...
Page 117 - Thus common salt is observed to as- v•"V"^ sume the shape of a cube, and alum that of an octahedron, consisting of two four-sided pyramids, applied base to base. Saltpetre affects the form of a six-sided prism ; and sulphate of magnesia that of a four-sided prism ; and carbonate of lime is often found in the state of a rhomboid.
Page 545 - ... rest upon this first; a third upon the second, and so on. Now though the rocks do not in reality extend round the earth in this uninterrupted manner; though partly from the inequality of the nucleus on which they rest, partly from their own inequality of thickness in different places, and partly from other causes, the continuity is often interrupted ; yet still we...
Page 188 - I pour the water out, let it stand a while to increase in heat, dry the outside of the glass well with a linen cloth, and then pour the water in again : this operation is to be continued till...
Page 178 - His apparatus is merely a glass tube, ten inches long, and rather less than half an' inch in diameter, open at one end, and hermetically sealed at the other. The close end is divided into 100 equal parts, having an interval of one line between each division.
Page 116 - By far the greater number of the salts as. snme likewise a crystalline form ; and as these substances are mostly soluble in water, we have it in our power to give the regular shape of crystals in .some measure at pleasure. 1 . Most solid bodies either occur in the state of crystals, or are capable of being made to assume that form. Now it has long been observed by chemists and mineralogists, that there is a par.
Page 545 - ... on. Now, though the rocks do not in reality extend round the earth in this uninterrupted manner ; though, partly from the inequality of the nucleus on which they rest, partly from their own inequality of thickness in different places, and partly from other causes, the continuity is often interrupted ; yet still we can trace enough of it to convince us that the rocks which constitute the earth's crust, considered in a great scale, are every where the same, and that they invariably occupy the same...
Page 118 - Pick out the most regular of these, and put them into a flat.bottomed vessel at some distance from each other, and pour over them a quantity of liquid obtained in the same way, by evaporating a solution of the salt, till it crystallizes on cooling. Alter the position of every crystal once at least every day with a glass rod, that all the faces may be alternately exposed to the action of the liquid ; for the face on which the crystal rests never receives any increment.