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Updated: May 8, 2025
To obtain sulphuric acid, Cyrus Harding had only one operation to make, to calcine the sulphate of iron crystals in a closed vase, so that the sulphuric acid should distil in vapor, which vapor, by condensation, would produce the acid. The crystals were placed in pots, and the heat from the furnace would distil the sulphuric acid.
THE NEWLY BORN. We loathe them. ECRASIA. They are noisome. ACIS. I don't want to be hard on the poor devils; but they are making me feel uneasy in my inside. I never had such a sensation before. MARTELLUS. I took a lot of trouble with them. But as far as I am concerned, destroy them by all means. I loathed them from the beginning. ALL. Yes, yes: we all loathe them. Let us calcine them.
It is quite impossible to suppose the vitrification to have been the result of a conflagration. No fire, whether accidental or the work of an incendiary, could be powerful enough to produce such results. The use of petroleum in the most terrible conflagrations of our own time those of the Commune in 1871, for instance did calcine and disintegrate stone, but I know of no case of vitrification.
I am of opinion that in cases such as this, where it is not intended to adopt the chlorination or cyanogen process, it will be found most economical to crush to a coarse gauge, concentrate, calcine the concentrates, and finally amalgamate in some suitable amalgamator.
The firing is provided from outside, the inventor maintaining that the products of combustion are inimical to rapid oxidisation, to specially promote which he introduces an excess of oxygen produced in a small retort set in the roof of the furnace and fed from time to time with small quantities of nitrate of soda and sulphuric acid. Ores containing much sulphur virtually calcine themselves.
and another asks: "Can you sublime and dulcify? calcine? Know you the sapor pontic? sapor stiptic, Or what is homogene, or heterogene?" Lines like the following show that Jonson's acute mind had grasped something of the principle of evolution: "...'twere absurd To think that nature in the earth bred gold Perfect in the instant: something went before. There must be remote matter."
But for the foods of tears mine eyelids rail and rain, * My fires would flame on high and every land calcine. To Allah make I moan of loved ones lost for aye, * Who for my pine and pain no more shall pain and pine: I never wronged them save that over love I nurst: * But Love departs us lovers into blest and curst."
How much the constitution of our bodies are concerned in this; and whether the temper of the brain makes this difference, that in some it retains the characters drawn on it like marble, in others like freestone, and in others little better than sand, I shall here inquire; though it may seem probable that the constitution of the body does sometimes influence the memory, since we oftentimes find a disease quite strip the mind of all its ideas, and the flames of a fever in a few days calcine all those images to dust and confusion, which seemed to be as lasting as if graved in marble.
Texas' educational system is probably up to the average, and President Winston as wise as many other pompous "gerund-grinders" who look into leather spectacles and see nothing, yet imagine that, like the adventurer in the Arabian tale, they are gazing upon all the wealth of the world; but that is no reason why we should continue to waste the public revenue on Lagado professors who would extract sunbeams from cucumbers and calcine ice into gunpowder.
Shells and corals are also formed of the same elements, with the addition of animal matter. To obtain pure lime it is necessary to calcine these calcareous substances, that is to say, to expose them to heat of sufficient intensity to drive off the carbonic acid, and other volatile matter.
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