Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: April 30, 2025
As he was obtaining over 4 oz. to the ton the process was paying very well, but it will be seen that the price would be prohibitive for poor ores unless they could be concentrated before calcination. The Pollok process is a newer, and stated to be a cheaper mode of lixiviation by chlorine. It is the invention of Mr. J. H. Pollok, of Glasgow University, and a strong Company was formed to work it.
It seemed necessary to suppose that not only was phlogiston expelled from mercury during calcination, but that the mercury also imbibed some portion, and that the purest portion, of the surrounding air.
It was very easy to make use of the theory in a broad and general way; by stretching it here, and modifying it there, it seemed to cover all the facts concerning combustion and calcination which were discovered during two generations after the publication of Stahl's books.
Then followed Putrefaction, necessary for the germination of the seed which had been produced by calcination, dissolution, and conjunction. Putrefaction was followed by Congelation and Citation. The passage through the next gate, called Sublimation, caused the body to become spiritual, and the spiritual to be made corporal.
The author of The Only Way says: "Surely every true Artist must look on this elaborate tissue of baseless operations as the merest folly, and can only wonder that the eyes of those silly dupes are not at last opened, that they may see something besides such absurd sophisms, and read something besides those stupid and deceitful books.... I can speak from bitter experience, for I, too, toiled for many years ... and endeavoured to reach the coveted goal by sublimation, distillation, calcination, circulation, and so forth, and to fashion the Stone out of substances such as urine, salt, atrament, alum, etc.
The calcination of mercury was mere child's play to this wonderful woman. She shewed me the calcined matter, and said that whenever I liked she would instruct me as to the process. I next saw the Tree of Diana of the famous Taliamed, whose pupil she was.
To see the evidence of marble, a body that is solid, having been formed of loose materials collected at the bottom of the sea, is not always easy, although it may be made abundantly plain; and to be convinced that this calcareous stone, which calcines so easily in our fires, should have been brought into fusion by subterraneous heat, without suffering calcination, must require a chain of reasoning which every one is not able to attain . But when fire bursts forth from the bottom of the sea, and when the land is heaved up and down, so as to demolish cities in an instant, and split asunder rocks and solid mountains, there is nobody but must see in this a power, which may be sufficient to accomplish every view of nature in erecting land, as it is situated in the place most advantageous for that purpose.
He believed that contagious diseases were carried by the air, and suggested that eruptions of the earth, such as those made by earthquakes, might send up "venomous exhalations" that produced diseases. He suggested also that the air might play an important part in some processes of calcination, which, as we shall see, was proved to be true by Lavoisier late in the eighteenth century.
Here the object is to separate, first, the earthy matters and extraneous metals, by forming them into oxides by calcination: these are subsequently obtained as waste products in the form of slag; while the copper is left in combination with sulphur, which is then dispelled at one operation.
In many cases human bones have been found in considerable quantities, sometimes in a calcined condition; but there is no real evidence to show that cremation was the burial rite practised. The calcination of human bones may well have been caused by the lighting of fires in the tomb, either at some funeral ceremony, or in even later days, when the place was used as a shelter for peasants.
Word Of The Day
Others Looking