 A small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally. Into this hole the substance to be examined must be put in very small quantity ; if a very intense heat is to be used, it should not exceed the...  Journal of the Geological Society of Dublin - Side 2291862Fuld visning - Om denne bog
 | 1818 - 514 sider
...ignited and dried, that it may not crack. The sides, and not the ends, of the fibres must be used ; otherwise the substance to be fused spreads about, and a round bead will not be formed. A small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally.... | |
 | 1818 - 512 sider
...ignited and dried, that it may not crack. The sides, and not the ends, of thq fibres must be used ; otherwise the substance to be fused spreads about, and a round bead will not be formed. A small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally.... | |
 | Andrew Ure - 1821 - 436 sider
...well ignited and dried, that it may not crack. The sides, not the ends, of the fibres must be used, otherwise the substance to be fused spreads about, and a round bead will not be formed. A small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally.... | |
 | John Joseph Griffin - 1827 - 368 sider
...tells us, that the sides, not the ends, of the fibres must be used ; otherwise the assay will spread about, and a round bead will not be formed. But, Berzelius, in the following passage, apparently gives us directions quite contrary : " In order to fix the flux to a point on the surface... | |
 | Andrew Ure - 1831 - 980 sider
...well ignited and dried that it may not crack. The sides, not the ends, of the fibres must be used ; otherwise the substance to be fused spreads about, and a round bead will not be formed. Л small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally.... | |
 | Arnold James Cooley - 1845 - 878 sider
...well ignited and dried that it may not crack. The sides, not the ends, of the fibres must be used ; otherwise the substance to be fused spreads about, and a round bead will not be formed. A small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally.... | |
 | Arnold James Cooley - 1846 - 592 sider
...well ignited and dried, that it may not crack. The sides, not the ends, of the fibres must be used ; otherwise the substance to be fused spreads about, and a round bead will not be formed. A small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally.... | |
 | Arnold James Cooley - 1850 - 590 sider
...well ignited and dried, that it may not crack. The sides, not the ends, of the fibres must be used ; otherwise the substance to be fused spreads about, and a round bead will not be formed. A small hole is to be made in the charcoal, which is best done by a slip of plate iron bent longitudinally.... | |
 | Arnold James Cooley - 1854 - 1060 sider
...well ignited and dried, that it may not crack. The sides, not the ends, of the fibres must be used ; otherwise the substance to be fused spreads about, and a round bead will not be formed. A email hole is to be made in the charcoal, which is best dono by a slip of plate iron bent longitudinally.... | |
 | Royal Geological Society of Ireland - 1862 - 406 sider
...have found to answer very well. large common crucible, and cover them with fine sand ; then place the crucible in the centre of a strong fire, and leave...to be chosen for its receptacle ; if placed on the section parallel to the layers, it would spread over the surface.,, "We have occasionally used both... | |
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