1. The _odor of the breath_ of the drunkard furnishes the earliest indication by which the habitual use of ardent spirit becomes known. This is occasioned by the exhalation of the alcoholic principle from the bronchial vessels and air-cells of the lungs--not of pure spirit, as taken into the stomach, but of spirit which has been absorbed, has mingled with the blood, and has been subjected to the action of the different organs of the body; and not containing any principle which contributes to the nourishment or renovation of the system, is cast out with the other excretions, as poisonous and hurtful. This peculiar odor does not arise from the accidental or occasional use of spirit; it marks only the habitual dram-drinker--the one who indulges daily in his potation; and although its density varies in some degree with the kind of spirit consumed, the habits and constitution of the individual, yet it bears generally a close relation to the degree of intemperance. These observations are confirmed by some experiments made on living animals by the celebrated French physiologist, Magendie. He ascertained that diluted alcohol, a solution of camphor, and some other odorous substances, when subjected to the absorbing power of the veins, are taken up by them, and after mingling with the blood, pass off by the pulmonary exhalants. Even phosphorus injected into the crural vein of a dog, he found to pass off in a few moments from the nostrils of the animal in a dense white vapor, which he ascertained to be phosphoric acid. Cases have occurred, in which the breath of the drunkard has become so highly charged with alcohol as to render it actually inflammable by the touch of a taper. One individual in particular is mentioned, who often amused his comrades by passing his breath through a small tube, and setting it on fire as it issued from it. It appears, also, that this has been the source of that combustion of the body of the drunkard which has been denominated spontaneous, many well-authenticated cases of which are on record. 2. The perspirable matter which passes off from the skin becomes charged with the odor of alcohol in the drunkard, and is so far changed, in some cases, as to furnish evidence of the kind of spirit drank. "I have met with two instances," says Dr. McNish, "the one in a claret, and the other in a port drinker; in which the moisture that exhaled from their bodies had a ruddy complexion, similar to the wine on which they had committed their debauch."