 | 1852 - 446 pagina’s
...period this beautiful color continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1733, that the Swedish chemist,...metal which he called cobalt, and proved that the coloring matter is the protoxide. Metallic cobalt is a brittle metal, of a reddish gray color ; it... | |
 | Perry Fairfax Nursey - 1851 - 552 pagina’s
...continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1 733 that the Swedish chemist, Brandt, obtained from this...School of Mines, at Paris, and investigations were alio carried on by Thenard and Proust. Metallic cobalt is a brittle metal, of a reddish-grey colour,... | |
 | 1851 - 656 pagina’s
...continued to be manufactured for a very long period from a mineral, the composition of which was unknown. It was not till the year 1733 that the Swedish Chemist...Bergman, confirmed and extended Brandt's results. In 1800, the School of Mines at Paris instituted a set of experiments with a view to obtain the pure... | |
 | 1851 - 520 pagina’s
...period this beautiful colour continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1733 that the Swedish chemist...protoxide. In 1780 Bergman confirmed and extended Brandt-s results; and in 1800 the subject was taken up by the School of Mines at Paris, and investigations... | |
 | William Francis, Henry Croft - 1851 - 496 pagina’s
...period this beautiful colour continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1733 that the Swedish chemist...protoxide. In 1780 Bergman confirmed and extended Brandt-s results ; and in 1 800 the subject was taken up by the School of Mines at Paris, and investigations... | |
 | William Newton, Charles Frederick Partington - 1851 - 536 pagina’s
...continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1 733 that the Swedish chemist, Brandt, obtained from this...metal which he called cobalt, and proved that the coloring matter is the protoxide. In 1780 Bergman confirmed and extended Brandt's results; and in 1800... | |
 | William Newton - 1851 - 540 pagina’s
...continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1 733 that the Swedish chemist, Brandt, obtained from this...metal which he called cobalt, and proved that the coloring matter is the protoxide. In 1 780 Bergman confirmed and extended Brandt's results; and in... | |
 | 1852 - 460 pagina’s
...period this beautiful color continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1733, that the Swedish chemist,...metal which he called cobalt, and proved that the coloring matter is the protoxide. Metallic cobalt is a brittle metal, of a reddish gray color ; it... | |
 | 1852 - 450 pagina’s
...period this beautiful color continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1733, that the Swedish chemist,...metal which he called cobalt, and proved that the coloring matter is the protoxide. Metallic cobalt is a brittle metal, of a reddish gray color ; it... | |
 | 1851 - 614 pagina’s
...composition was unknown. л not till the year 1733 that the Swe"roeeedingi of the Society of Arlé. dish chemist Brandt obtained from this ore the metal which he called cobalt, and proved that the coloring matter is the protoxide. In 17ЙО Bergman confirmed and extended Brandt's results: and in... | |
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Thus for a very long period this beautiful colour continued to be manufactured from a mineral whose composition was unknown. It was not till the year 1733 that the Swedish chemist Brandt obtained from this ore the metal which he called cobalt, and proved... 