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Updated: July 9, 2025
Platinum, . . . . . 76.4 Iridium,. . . . . . 4.3 Rhodium,. . . . . . 0.3 Palladium,. . . . . 1.4 Gold, . . . . . . . 0.4 Copper, . . . . . . 4.1 Iron, . . . . . . . 11.7 Osmide of Iridium,. 0.5 Sand, . . . . . . . 1.4 100.5 This refers to the Uralian ore.
It so happens, as he says, that iridium and rhodium do make the metal more capable of resisting the attacks of acids than platinum itself. The fine stream that you see around the silver is the discharge of the electric force that takes place, giving you that glorious green light which you see in the ray; and if Dr.
We shall now shew you this same process of boiling the silver, cast on a screen from the electric lamp which you have before you; and while Dr. Tyndall is kindly getting the lamp ready for this purpose, let me tell you that Deville proposes to throw out in this way all these extraneous things that I have spoken of, except two namely, iridium and rhodium.
IMPERIAL WATER. Put into an earthen pan, four ounces of sugar, and the rind of three lemons. Boil an ounce of cream of tartar in three quarts of water, and pour it on the sugar and lemon. Let it stand all night, clear it through a bag, and bottle it. INCENSE. Compound in a marble mortar, a large quantity of lignum rhodium, and anise, with a little powder of dried orange peel, and gum benzoin.
If you add more oil of rhodium, it will produce a rose perfume. Sew up the powder in little silk bags, or keep it in a tight box. Take, when empty, one of the little bottles that has contained indelible ink, such as is sold in cases, and wash and rinse it clean. Put into it half an inch of lunar caustic; fill it up with good vinegar, and cork it tightly. This is the marking ink.
The juice of loveage or smellage mixed with any kind of bait, or a few drops of the oil of rhodium; India cockle, also, is sometimes mixed with flour dough, and sprinkled on the surface of still water.
Oil of Assafoetida is by many trappers considered the best, but Oil of Rhodium, powdered fennel, fenugreek and Cummin Oil are also much used. It is well to smear a little of the first mentioned oil near the traps, using any one of the other substances, or indeed a mixture of them all, for the trail.
I had experience of informers in the distillery line once. The worst varmin that is ever encouraged in any house or country. The very mintion of them makes me creep all over still. Catty. Then 'tis Carver, they say, that has the oil of Rhodium for them; for they follow and fawn on him, like rats on the rat catcher of all sorts and sizes, he has 'em.
The composition of this coin is platinum, 97.0; iridium, 1.2; rhodium, 0.5; palladium, 0.25; a little copper, and a little iron. It is, in fact, bad platinum: it scales, and it has an unfitness for commercial use and in the laboratory, which the other well-purified platinum has not. It wants working over again.
No spring or sliding-pole is necessary in this method, as the animal when caught will immediately run for the water, and the weight of the trap will sink and drown its prisoner. The Oils of Rhodium and Amber, page 151 are also successfully employed by many trappers; a few drops of either in the neighborhood of the trap, or directly upon it, being sufficient.
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