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Updated: June 8, 2025
It was unnecessary he knew that even before he performed the act. Yes the man was dead He reached out and picked up the bottle. The odour was tell-tale evidence enough. The bottle had contained prussic, or hydrocyanic acid, probably the moist deadly poison in existence, and the swiftest in its action. He replaced the bottle on the spot where he had found it, and stood up.
I know your game the water forms acetylene with the carbon, and that uniting with the nitrogen of the air under the terrific heat of the electric arc forms hydrocyanic acid. Would you poison us, too? Do you think you can put me unconscious out on the street and have a society doctor diagnose my case as pneumonia?
The system of ventilation should admit of operation either from the inside or the outside of the house, as fumigation with hydrocyanic acid gas is sometimes necessary, in the fumes of which it is impossible to enter, unless with a gas mask.
For the destruction of almost all classes of fruit-pests, the only really complete method now in sight is the application of a poisonous gas, such as hydrocyanic acid, which is retained by means of a gas-proof tent pitched around each tree.
I haven't the slightest idea of its true nature, but it seems to have a powerful affinity for important nerve centers of respiration and muscular coordination, as well as for disorganizing the blood. I should say that it produces death by respiratory paralysis and convulsions. To my mind it is an exact, though perhaps less active, counterpart of hydrocyanic acid."
The professor went to the table, on which the formidable collection of poisons such as red and white arsenic, hydrocyanic acid, morphine and phosphorus was placed, and, examining the vial, declared, that, to the best of his judgment, it was genuine phosphorus. M. Chabert asked Mr. Smith, how many grains he wished to commence his first draught with. Mr.
The residue left in the retort speedily turns to one of the blues, identical with, or allied to, Prussian blue. This is at best a disagreeable process to conduct, for the hydrocyanic acid formed adheres so strongly to the glass, that, instead of being freely given off, bubbles are evolved suddenly with such explosive violence as occasionally to crack the vessel.
The solution may be evaporated to dryness, and one part of the salt dissolved in six of water; one part of muriatic acid, sp. gr. 1.15, is then added, and the solution distilled, when the whole of the hydrocyanic acid passes over, and by being conducted into a solution of potassa, as in the former process, forms cyanuret of potassium.
They have, at bottom, the same weaknesses and appetites. They react in substantially the same way to all chemical and mechanical agents. A dose of hydrocyanic acid, administered per ora to the most sagacious woman imaginable, affects her just as swiftly and just as deleteriously as it affects a tragedian, a crossing-sweeper, or an ambassador to the Court of St. James.
By boiling, however, the ignited residue with spirits of wine this difficulty is said to be overcome, as the ferrocyanate is absolutely insoluble in that menstruum, while the cyanuret, at that heat, freely dissolves, and is as easily re-deposited on cooling. "There is, however, a much better process by which this salt may be formed, viz. by simply transmitting hydrocyanic acid through potassium.
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