Scientific amusements . The generation of oxygen from oxide of manganese and potash. M. Boussingault, who passed the gas upon a substance ata certain temperature, and released it at a higher. Theillustration on page 69 will show the way in which theexperiment was performed. Boussingault permitted a thin stream of water to flowinto a large empty flask, and by this water the air wasgradually driven out into a flask containing chloride ofcalcium and sulphuric acid, which effectually dried itThis dry air then passed into a large tube inside the 68 CHEMISTRY. revcrberatory furnace, in which tube we
Scientific amusements . The generation of oxygen from oxide of manganese and potash. M. Boussingault, who passed the gas upon a substance ata certain temperature, and released it at a higher. Theillustration on page 69 will show the way in which theexperiment was performed. Boussingault permitted a thin stream of water to flowinto a large empty flask, and by this water the air wasgradually driven out into a flask containing chloride ofcalcium and sulphuric acid, which effectually dried itThis dry air then passed into a large tube inside the 68 CHEMISTRY. revcrberatory furnace, in which tube were pieces of causticbaryta. Heated to a dull redness this absorbs oxygen, and when the heat is increasedto a bright red the superabun-dant gas is given off. Thusthe oxygen was permitted topass from the furnace-tube intothe receiving glass, and so pureoxygen was obtained from theair which had been in theglass bottle at first (page 69).. HYDROGEN—SYMBOL H; ATOMICWEIGHT I. Phosphorus burning-in oxygen. HYDROGEN is abundaOt iu nature, but never free. United with oxygen it forms water,hence its name, water-former. It is to Parcelcus that itsdiscovery is due, for he found that oil of vitriol in contactwith iron disengaged a gaswhich was a constituent of |water. This gas was subse-quently found to be inflam-mable, but it is to Cavendishthat the real explanation of Ihydrogen is owing. He ex-plained his views in 1766. Hydrogen is obtained in themanner illustrated in the cut,by means of a furnace, as onpage 70, or by the bottlemethod, as per page 71. The Ifirst method is less convenientthan the second. A gun-barrel or fire-proof tube is passed through the furnace, andfilled with iron nails or filings ; a delivery tube is at the 1 1 F^^ Kwi^fti 11 |B W»m ^^^^ S^^H^^siw!^^M JISiJM ^^^S ? 1 1 Magnesium wire burning in oxygen. HYDROGEN. 69 farther end, and a flask of water boiling at the other. Theoxygen combines with the ir
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Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
