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Updated: May 9, 2025
In the way of industry, nothing or next to nothing. Nevertheless the dull butcher is magnificent in his indescribably sumptuous jerkin. It has the refulgency of copper pyrites, of gold, of Florentine bronze. While clad in black, he enriches his sombre costume with a vivid amethyst hem. On the wing-cases, which fit him like a cuirass, he wears little chains of alternate pins and bosses.
He is constantly testing the various tortas spread out upon the patio; to one he determines that lime must be added; to another, an opposite process must be applied by adding iron pyrites.
The deposition of gold being thus controlled, its loss by dispersion or from the crumbling away of the sustaining pyrites is nearly or quite prevented, a conservative effect which we could scarcely expect to obtain if organic matter were the reducing agent.
According to the Mineral Review, Madrid, 1866, xvii. 244, the coal from the mountain of Alpacó, in the district of Naga, in Cebu, is dry, pure, almost free of sulphur pyrites, burns easily, and with a strong flame.
I examined with attention the bed of the torrent of La Guayra; and found it to consist merely of a barren soil, blocks of mica-slate, and gneiss, containing pyrites detached from the Sierra de Avila, but nothing that could have had any effect in deteriorating the purity of the air. Since the years 1797 and 1798, at which periods there prevailed dreadful mortality at Philadelphia, St.
He says, referring to an occurrence of a Natural Sulphide of Gold: "The existence of gold, in the form of a natural sulphide in conjunction with pyrites, has often been advanced theoretically, as a possible occurrence; but up to the present time has, I believe, never been established as an actual fact.
Concho took from his saddle bags a lump of greyish iron ore, studded here and there with star points of pyrites. The stranger said nothing, but his eye looked a diabolical suggestion. "You are lucky, friend Greaser." "Eh?" "It IS silver." "How know you this?" "It is my business. I'm a metallurgist." "And you can say what shall be silver and what is not." "Yes, see here!"
There was regulus from New Zealand, and the good old pyrites from the Cornish mines; some compounds with arsenic, antimony, and numerous other substances; and last, though in one sense not least, there was a solitary specimen of ore from Ireland. These ores were all in the form of a coarse powder.
But experience, that great baffler of speculation, showed it would not be; the sulphureous vitriolic steams that issue from the pyrites, which frequently, if not always, accompanies pit-coal, ascending with the flame, and poisoning the ore sufficiently to make it render much worse iron than that made with charcoal, though not perhaps so much worse as the body of the coal itself would possibly do."
Savages so commonly make fire by friction rubbing sticks, drills, etc. that one is naturally tempted to regard this as the primitive method. I doubt if this was the case. When, in Neolithic times, men commonly bury the dead, and put some of their personal property in the grave with them, the fire-kindling apparatus we find is a flint and a piece of iron pyrites.
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