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The whole of the rather large room was full of glass bottles with long necks twined round glass tubes of a duck- beak shape, retorts, resembling chubby cheeks out of which came noses like trumpets, crucibles, cupels, matrasses, cucurbits and vases of all forms. My dear old tutor wiping his face shining like live coals said: "Oh, sir, we were afraid that the castle was alight like straw.
A good deal older than Plato, you see, and much more experienced than my Lord Bacon and most of the world's teachers. Old books, as you well know, are books of the world's youth, and new books are fruits of its age. How many of all these ancient folios round me are like so many old cupels! The gold has passed out of them long ago, but their pores are full of the dross with which it was mingled.
A good deal older than Plato, you see, and much more experienced than my Lord Bacon and most of the world's teachers. Old books are books of the world's youth, and new books are fruits of its age. How many of all these old folios round me are like so many old cupels! The gold has passed out of them long ago, but their pores are full of the dross with which it was mingled.
Either the mine had yielded exceedingly rich streaks and had been, in mining parlance, "gophered," or else the management had been as foolish as ever handled a property. In the assay-house, where the furnaces were dust-covered, the scale case black with grime, and the floor littered with refuse crucibles, cupels, mufflers, and worn buckboards, they discovered a bundle of old tablets.
A good deal older than Plato, you see, and much more experienced than my Lord Bacon and most of the world's teachers. Old books, as you well know, are books of the world's youth, and new books are fruits of its age. How many of all these ancient folios round me are like so many old cupels! The gold has passed out of them long ago, but their pores are full of the dross with which it was mingled.
If, before writing down his observation on a star, the astronomer has to separate from it all the errors resulting from atmospheric and optical laws, it is manifest that the refraction-tables, and logarithm-books, and formulæ, which he successively uses, serve him much as retorts, and filters, and cupels serve the assayer who wishes to separate the pure gold from all accompanying ingredients.
He describes the operations of distillation, sublimation, filtration, various chemical apparatus, water-baths, sand-baths, cupels of bone-earth, of the use of which he gives a singularly clear description. A chemist reads with interest Djafar's antique method of obtaining nitric acid by distilling in a retort Cyprus vitriol, alum, and saltpetre.
The strong, hard, masterful, and domineering face of Bully Presby arose before him as from the darkening shadows of the room, and it seemed triumphant. He lifted his head suddenly, thinking, in his superacute state of mind, that he had heard a noise. He must have air! The assay office, with its smell of nitric acid, its burned fumes, its clutter of broken cupels and slag, was unbearable.
Balloons, tubes, pipettes, pneumatic vats, receivers, cupels, lamps, bell-glasses, blow-pipes, and mortars, he passed in review to assure himself that during his absence nothing had been damaged. He carefully dusted his jars, examined the labels, made sure that none of his treasures were cracked, that his gauges were not out of order.
And the afternoon passed as quickly while he worked over the bucking board a plate used to crush ore for assaying in the assay-house, and watched the gasoline flare and fume in his furnaces to bring the little cupels, with their mass of powdered, weighed, and numbered samples, to a molten state.
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