Suitable emetics are sulphate of zinc in thirty-grain doses dissolved in warm water, a dessert-spoonful of mustard in half a pint of warm water, ipecacuanha wine in tablespoonful doses, copious draughts of hot water. Tartar emetic and sulphate of copper should be avoided, except in cases of phosphorus poisoning, when the latter may be used. The hypodermic injection of ⅒ grain of apomorphine is a very useful emetic, especially in cases of narcotic poisoning. Irritation of the fauces with the finger or a feather promotes vomiting, and may be useful in the absence of an emetic. The stomach tube or pump is most useful in that it is under the control of the operator and enables him to thoroughly wash out the stomach. After passing the tube, previously lubricated with vaseline or glycerine, through the œsophagus down to the stomach, a pint of warm water should be first injected before withdrawing any of the contents. By alternate injection of water and its withdrawal, the stomach may be efficiently cleansed, and at the same time solutions of suitable antidotes may be passed into it. It must be remembered that neither the stomach pump, syphon tube, nor emetics, are to be used in cases of poisoning with corrosives, with the exception of carbolic acid. The tube should be used with great caution in cases of irritant poisoning. Antidotes are remedies which counteract the effects of poisons. They act mechanically, _e.g._ flour and water, chalk mixture; chemically, as magnesia and chalk in mineral acid poisoning, alkaline sulphates in lead and barium poisoning; and physiologically, as antagonists, such as morphine and atropine, atropine and physostigmine, strychnine and chloral hydrate. To counteract the effects of the portion of the poison absorbed, special treatment is necessary: purges and diuretics may be called for; artificial respiration may be necessary; cardiac depressants require cardiac stimulants; the cold douche as a restorative and external warmth are desirable in certain cases. Sedatives may be administered to alleviate convulsive seizures. Tracheotomy may be required in cases with laryngeal complications; and pain, exhaustion, excessive vomiting or purging are to be treated by appropriate remedies. EXAMINATION OF THE CONTENTS OF THE STOMACH, VISCERA, ETC., FOR POISON The number and condition of the vessels received should be noted and copies made of any affixed labels. The appearance, smell, colour, and reaction to test paper of the contents should be noted, and their weights and volumes determined. All jars, wrappers, labels, and seals should be preserved for future reference. The stomach contents should be carefully examined in reference to their nature, colour, and smell, and the presence or absence of any abnormal constituents. The mucous membrane of the stomach should be examined with the naked eye and by the aid of a lens, the surface washed with distilled water, and the washings added to the contents.