For low choke more time than nature allows, when the impediment is situated near the mouth, may be occupied. No hurry nor any speedy remedy is required. Give oil, by the quarter of a pint, every hour. In the intermediate half hours give strong antispasmodics, using the horse probang after every dose of the latter. Sulphuric ether, two ounces; laudanum, two ounces; water, half a pint, will constitute the proper drench. Should the whole be returned, chloroform must be administered, by inhalation, till total insensibility results. Then, the head being extended, the probang should be introduced, and gentle but steady pressure made to force the obstruction onward. If success comes early, it is easily welcomed; but it is well not to expect success before the expiration of twenty minutes. When movement is felt, do not increase the force. Maintain a steady pressure, never relaxing and never augmenting the power exerted. Drive the substance slowly before you, but do not, by sudden energy, risk either the provocation of spasmodic action or a rupture of the œsophagus. Before using the probang, always calculate the length of the whalebone, so as to judge when the end has nearly entered the stomach. It is always well, if possible, to avoid forcing the end of the probang through the cardiac opening, as the termination of the œsophagus is called. The muscular fibers here are strongly developed, and are formed to resist the passage of any substance out of the stomach. To be sure, the animal is under the influence of chloroform; but that powerful agent seems more particularly to exert its action upon the voluntary muscles; whereas, the cardiac orifice is guarded by white, involuntary muscular fiber. A few days subsequent to the removal of the obstruction, no matter where it may have been situated, feed on soft-boiled food--not bran mashes; and in case of roots not being at hand, sustain the life with smoothly-made gruel. Let the animal be observed, when watered. Should the liquid be returned by the nostrils, injury to the lining membrane of the œsophagus is indicated; stricture may then be anticipated. Though it be not probable that any medicine will now be beneficial, nevertheless, as an experiment, administer, thrice daily, four ounces of water in which four grains of chloride of zinc have been dissolved.