Two of these tendencies I will mention as diagnostic, or characteristic and inseparable marks of ordinary alcoholic intoxication, but which no excess in the use of opium ever develops. One is the loss of self-command, in relation to all one's acts and purposes, which steals gradually (though with varying degrees of speed) over _all_ persons indiscriminately when indulging in wine or distilled liquors beyond a certain limit. The tongue and other organs become unmanageable: the intoxicated man speaks inarticulately; and, with regard to certain words, makes efforts ludicrously earnest yet oftentimes unavailing, to utter them. The eyes are bewildered, and see double; grasping too little, and too much. The hand aims awry. The legs stumble and lose their power of _concurrent_ action. To this result _all_ people tend, though by varying rates of acceleration. Secondly, as another characteristic, it may be noticed that, in alcoholic intoxication, the movement is always along a kind of arch; the drinker rises through continual ascents to a summit or _apex_, from which he descends through corresponding steps of declension. There is a crowning point in the movement upwards, which once attained cannot be renewed; and it is the blind, unconscious, but always unsuccessful effort of the obstinate drinker to restore this supreme altitude of enjoyment which tempts him into excesses that become dangerous. After reaching this _acme_ of genial pleasure, it is a mere necessity of the case to sink through corresponding stages of collapse. Some people have maintained, in my hearing, that they had been drunk upon green tea; and a medical student in London, for whose knowledge in his profession I have reason to feel great respect, assured me, the other day, that a patient, in recovering from an illness, had got drunk on a beef-steak. All turns, in fact, upon a rigorous definition of intoxication. Having dwelt so much on this first and leading error in respect to opium, I shall notice briefly a second and a third; which are, that the elevation of spirits produced by opium is necessarily followed by a proportionate depression, and that the natural and even immediate consequence of opium is torpor and stagnation, animal as well as mental. The first of these errors I shall content myself with simply denying; assuring my reader, that for ten years, during which I took opium, not regularly, but intermittingly, the day succeeding to that on which I allowed myself this luxury was always a day of unusually good spirits.