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The form now given by Hughes to the balance is one of so great compactness and convenience that it will probably prove a most acceptable addition to the resources of the physical laboratory. Nature. Cast iron may be hardened as follows: Heat the iron to a cherry red, then sprinkle on it cyanide of potassium and heat to a little above red, then dip.
A portion of the vat V is cut away to show the interior, which contains a solution S of the double cyanide of gold and potassium when gold is to be laid, and the double cyanide of silver and potassium when silver is to be deposited. The electrodes are hung from metal rods, the anode A being a plate of gold or silver G, as the case may be, and the cathode C the spoons in question.
Thorndyke shook his head, though he stooped and put his fingers on the unconscious man's wrist. "Prussic acid or potassium cyanide is what the appearances suggest," he replied. "But can't you do anything?" demanded the inspector. Thorndyke dropped the arm, which fell limply to the floor. "You can't do much for a dead man," he said. "Dead! Then he has slipped through our fingers after all!"
Day and night a detachment of men are to be employed at the springs, deliberately engaged in the attempt to change the flow of pure water into a slow, subtle, deadly poison, the effects of which will not be immediately fatal, but positively so in the course of a few days. Every drop of water that we drink or use in any way will be polluted with this deadly cyanide. It's only a question of time.
I ate the other. The fruit contained the malic acid I needed to manufacture the calomel, and I made it right there in nature's own laboratory. But there was no time to stop. I had to act just as quickly to neutralise that cyanide, too. Remembering the ammonia, I rushed back with Mrs. Boncour, and we inhaled the fumes. Then I found a bottle of peroxide of hydrogen.
Thorndyke shook his head, though he stooped and put his fingers on the unconscious man's wrist. "Prussic acid or potassium cyanide is what the appearances suggest," he replied. "But can't you do anything?" demanded the inspector. Thorndyke dropped the arm, which fell limply to the floor. "You can't do much for a dead man," he said. "Dead! Then he has slipped through our fingers after all!"
From the first it has been one of his vainest notions that I am perversely working myself to death. "There's nothing to be done with the Padre, then, I'm afraid," said Laurence, chuckling. "I might soak him in the cyanide jar for ten minutes a day without killing him," mused Mr. Flint. "But," disgustedly, "what'd be the use?
You have not absolutely proved that the knife belonged to Miss Whitney, only proved that it is probable she might have owned it. Wait" as Miller started to interrupt. "The deputy coroner testified that Spencer was killed by cyanide of potassium." "Which, as Spencer did not swallow it, was administered by aid of the knife," retorted Mitchell hastily.
According to the experiments which have been made up to the present time, it has been found that the separation of copper is best effected in a nitric acid solution, while that of nickel and cobalt takes place most readily in an ammoniacal solution, and for the precipitation of zinc and cadmium a potassium cyanide solution is the best.
We put half a teaspoonful of pure cyanide of potassium in a long-handled wooden spoon, and dropped it on the cat's tongue, as near the throat as we could. Poor pussy she died in a few seconds. Do you know, I was reading such a funny thing the other day about giving cats medicine. They hate it, and one can scarcely force it into their mouths on account of their sharp teeth.
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