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Updated: May 29, 2025
It is used to dissolve the sensitive salt of silver which remains unchanged during the exposure in the camera. It has the property of readily dissolving the chloride, bromide and iodide of silver. It should be pure and free from sulphuret of sodium; should this last be present, it will cause brown spots of sulphurated silver upon the Daguerreotype impression.
John's wort, Clown's all-heal, elder, parsley, maidenhair, mineral drugs, such as lime, saltpetre, Armenian bole, crocus metallorum, or sulphuret of antimony; and thaumaturgic or mystical, of which the chief is, "My black powder against the plague, small-pox; purples, all sorts of feavers; Poyson; either, by Way of Prevention or after Infection."
The secret of this is as follows: The jug contains a little sulphuret of potash, and the words are written with acetite of lead. The action of the exterior air, on, the sulphuret of potash, disengages from it sulphurated hydrogen gas, which, acting on the oxyd of lead, brings to view the characters that before were invislble.
'That varies much. This gray sulphuret contains about 70 per cent. of copper, and is worth L.35 per ton. This yellow sulphuret, from being mixed with a large quantity of iron and silicious earth, contains only about 12 or 14 per cent. Some malachites contain so much as 50 per cent., and others less pure, 30 to 40 per cent. of copper.
I know only a few rare exceptions to this law, and they occur in the Cordilleras of Quito where the Nevados of Conderasto and Cuvillan, situated opposite to the trachytic Chimborazo, are composed of mica-slate and contain veins of sulphuret of silver.
For sickness among old people sickness in the stomach, pains in the back, and for rheumatism, the vapor-bath was used. For sore head, neck, &c., pounded sulphuret of iron mixed up with oil was rubbed over the part affected, and was said generally to effect a cure in two or three days.
More water is now poured in; the barrel revolves very slowly to let the amalgam all settle to the bottom, the mud runs off through a cock four inches above the bottom, and the mercury and amalgam are then drawn off through a little hole in the bottom of the barrel. Quicksilver Mining. The ore from which quicksilver is obtained is a sulphuret.
That smoke consists of those very particles which are produced by the combustion of the phosphorus. Here, again, are two substances. This is chlorate of potassa, and this other sulphuret of antimony. I shall mix these together a little, and then they may be burnt in many ways.
HOW TO REMOVE SUPERFLUOUS HAIR. Sulphuret of Arsenic, one ounce; Quicklime, one ounce; Prepared Lard, one ounce; White Wax, one ounce. Melt the Wax, add the Lard. When nearly cold, stir in the other ingredients. Apply to the superfluous hair, allowing it to remain on from five to ten minutes; use a table-knife to shave off the hair; then wash with soap and warm water.
A small quantity of bismuth, in the proportion of about one per cent, or less of the mixture, is added together with the sulphur. The metal may be introduced in the metallic form in the shape of fillings, or in the form of a carbonate, sulphuret, sulphate, or sulphide, or oxide, as may be most convenient.
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