 | Louis Jacques baron Thénard, John George Children - 1819 - 540 ページ
...of soda or potassa. Oxide of Lead melts, and is very quickly reduced, either without any addition, or when fused with microcosmic salt or borax. The...exterior flame, but becomes protoxide in the interior. Witb both microcosmic salt and borax it forms a yellow-green glass while hot, but which becomes blue-green... | |
 | William Thomas Brande - 1821 - 582 ページ
...or when fused with microcosmic salt or borax. The glass not reduced is black. Oxide of Copper (826) is not altered by the exterior flame, but becomes...and the metal is reduced. If the quantity of oxide be so small that the colour be not perceptible, its presence may be detected by the addition of a little... | |
 | Andrew Ure - 1821 - 436 ページ
...solution of soda or potash. Oxide of Lead melts, and is very quickly reduced, either without any addition, or when fused with microcosmic salt or borax. The...becomes protoxide in the interior. With both microcosmic »alt and borax it forms a yellow-green glass while hot, but which becomes blue-green as it cools.... | |
 | William Thomas Brande - 1821 - 666 ページ
...soda or potassa. Oxide of Lead (872) melts, and is very quickly reduced, either without any addition, or when fused with microcosmic salt or borax. The glass not reduced is black. Oxide of Copper (826) is not altered by the exterior flame, but becomes protoxide in the interior. With both microcosmic... | |
 | Andrew Ure - 1827 - 904 ページ
...solution of soda or potash. Oxide 0/Lead melts, and is very quickly reduced, either without any addition, or when fused with microcosmic salt or borax. The glass not reduced ¿is black. Oxldeofcoppcrlsnotaltered b¿ytheexte. rice flame, but becomes protoxide in the Late.. rice. With both... | |
 | Andrew Ure - 1828 - 872 ページ
...or potash. O.ri(7i of Lead melts, and is very quickly reduced, either without any addition, or »hen fused with microcosmic salt or borax. The glass not...flame, but becomes protoxide in the interior. With both microcormic inli and bvrax it forms a yellow-green glass while hot, but which becomes blue-green as... | |
 | William Thomas Brande - 1830 - 784 ページ
...of soda or potassa. Oxide of Lead melts, and is very quickly reduced, either without any addition, or when fused with microcosmic salt or borax. The...and the metal is reduced. If the quantity of oxide be so small that the colour be not perceptible, its presence may be detected by the addition of a little... | |
 | Andrew Ure - 1831 - 980 ページ
...solution of soda or potash. Oxide of Lead melts, and is very quickly reduced, either without any addition, or when fused with microcosmic salt or borax. The glass not reduced is black. Oxide of Copier is not altered by the exterior flame, but becomes protoxide in the interior. With both microcotmic... | |
 | William Thomas Brande - 1863 - 736 ページ
...solution of the oxide. A coil of fine steel wire may be used in place of a needle. Before the blowpipe, black oxide of copper is not altered by the exterior flame, but becomes red suboxide in the interior. With borax it forms a green glass, while hot, which becomes blue-green... | |
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Oxide of Lead melts, and is very quickly reduced, either without any addition, or when fused with microcosmic salt or borax. The glass not reduced is black. Oxide of Copper is not altered by the exterior flame, but becomes protoxide in the interior. With... 