The Universal Preceptor: Being a General Grammar of Arts, Sciences, and Useful Knowledge ... |
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... metals , they do not possess the simple method of communicating a spark to tinder , by the violent collision of flint and steel . 18. The clothing of savage nations has reference solely to the inclemency of the weather : and ...
... metals , they do not possess the simple method of communicating a spark to tinder , by the violent collision of flint and steel . 18. The clothing of savage nations has reference solely to the inclemency of the weather : and ...
Страница 17
Viewing the metals in ordinary use , we consider them common productions ; but no art is so curious , as that of extracting metals from the earth , or oar in which they are buried or concealed ; and no discovery 9 * . METALLURGY .
Viewing the metals in ordinary use , we consider them common productions ; but no art is so curious , as that of extracting metals from the earth , or oar in which they are buried or concealed ; and no discovery 9 * . METALLURGY .
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Metals are very seldom found in a pure state ; but perhaps the first discoverer , having found some metal in a detached or pure state , was led to make experiments on those lumps of shapeless and coarse , but heavy earth ; which consist ...
Metals are very seldom found in a pure state ; but perhaps the first discoverer , having found some metal in a detached or pure state , was led to make experiments on those lumps of shapeless and coarse , but heavy earth ; which consist ...
Страница 19
All minerals , i . e . all earths , soils , stones , and metals , are scientifically divided into four classes . I. Earthy Minerals - being all such , as are void of taste and smell , light and brittle ; as millstone , flint or silex ...
All minerals , i . e . all earths , soils , stones , and metals , are scientifically divided into four classes . I. Earthy Minerals - being all such , as are void of taste and smell , light and brittle ; as millstone , flint or silex ...
Страница 20
Oxides may be converted into metals again , by depriving them of their oxygen . In the example of red lead , if it be burnt again with powdered charcoal , the charcoal will detach the oxygen from the oxide , and the lead will be ...
Oxides may be converted into metals again , by depriving them of their oxygen . In the example of red lead , if it be burnt again with powdered charcoal , the charcoal will detach the oxygen from the oxide , and the lead will be ...
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| Наслов | The Universal Preceptor: Being a General Grammar of Arts, Sciences, and Useful Knowledge ... |
| Аутор | Sir Richard Phillips |
| Издавач | A. Phelps, 1826 |
| Оригинал из | Универзитет Харвард |
| Дигитализовано | 26 окт 2007 |
| Дужина | 312 страница |
| Извоз навода | BiBTeX EndNote RefMan |