"Cupel" Quotes from Famous Books
 ... Copper in a due proportion, the Arsenick will Blanch the Copper both within and without, which is an Experiment well enough Known; but when I enquir'd, whether or no this White mixture being skilfully kept a while upon the Cupel would not let go its Arsenick, which made Whiteness its praedominant Colour, and return to the Reddishness of Copper, I was assur'd of the Affirmative; so that among Mineral Bodyes, some of those that are White, may be far ...
— Experiments and Considerations Touching Colours (1664) • Robert Boyle
... treatment it gets, sir," he replied. "I usually bruise it in the mortar before cooking, without breaking up the fibre too much, and then I heat up the little cupel furnace to about 600 C, and put the steak in ...
— The Red Thumb Mark • R. Austin Freeman
... essentially a roasting dish sufficiently thick to resist, for a time, the corrosive action of the fused metallic oxides it is to contain. The essential property of a cupel is, that it is sufficiently porous to allow the fused oxide to drain into it as fast as it is formed. It should be large enough to absorb the whole of the liquid; and of course must be made of a material upon which the liquid has no corrosive action. ...
— A Textbook of Assaying: For the Use of Those Connected with Mines. • Cornelius Beringer and John Jacob Beringer |
