. A text-book of practical therapeutics, with especial reference to the application of remedial measures to disease and their employment upon a rational basis . open, with the teethtightly clinched, and the lips covered by a bloody froth, or three stagesof poisoning may ensue if the dose has not been large enough toresult in immediate death, owing to its slow absorption. In the firstof these stages there are difficult respiration, slow cardiac action, anddisturbed cerebration. In the second stage, which is convulsive,there are present wild cries, dilated pupils, unconsciousness, vomiting,spasm
. A text-book of practical therapeutics, with especial reference to the application of remedial measures to disease and their employment upon a rational basis . open, with the teethtightly clinched, and the lips covered by a bloody froth, or three stagesof poisoning may ensue if the dose has not been large enough toresult in immediate death, owing to its slow absorption. In the firstof these stages there are difficult respiration, slow cardiac action, anddisturbed cerebration. In the second stage, which is convulsive,there are present wild cries, dilated pupils, unconsciousness, vomiting,spasmodic urination and defecation, erections of the penis, and ejacula-tions of semen. In the third stage there are asphyxia, collapse, andparalysis, ending in death. The blood is found to be dark andvenous-looking, but does not give the spectrum bands of cyano-hsemoglobin. These bands only appear when the drug is shakenwith blood outside the body. The diagnostic signs of death from prussic acid are the odor of thebody, the wide-staring eye, the clinched teeth covered with froth, andthe livid, cyanosed face. If the body be opened, the odor of hydro- Fig. Tracing of the deep stormy respirations of an animal under the influence of hydrocyanic acid.(After Schmiedeberg.) I. Normal respirations; II. Acid inhaled; III. Violent deep respirations;IV. Arrest of respiration. cyanic acid is marked, but this rapidly passes away, owing to the vola-tility of the drug. The only poison producing symptoms resembling those which havejust been described is nitrobenzole or essence of mirbane, which hasa somewhat similar odor, but which is, however, more permanent, theodor remaining for hours in the opened body, Therapeutics.—Hydrocyanic acid is useful in cases of gastralgia ofpurely nervous origin, and in some cases of nervous vomiting, and inirritable stomach, where, owing to hyperesthesia of the mucous mem-branes, the taking of food produces discomfort. In irritable coughs, due to tickling in
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