In the case of the milder narcotics--tea, coffee and tobacco--this craving, though the symptom of a depraved state of the organism, does not directly demoralize the character. But the moral injury wrought by alcohol, opium and haschisch is known to every one, and the effects of coca-drunkenness are said to be no less frightful. This is because the milder narcotics affect chiefly the medulla, the spinal cord and the sympathetic, while the fiercer ones chiefly affect the cerebrum. Tobacco may paralyze the brain sufficiently to cause nocturnal wakefulness; but it cannot impair one's self-control or one's sense of responsibility. It never transforms a man into a selfish brute, who will beat his wife, neglect his business, and allow his children to starve. Here then we arrive at a supremely interesting distinction. The craving for tobacco is principally a craving of those inferior nerve-centres which exert comparatively little direct influence upon the mental and moral life. But the craving for alcohol is a cerebral craving. The habitual indulgence of it involves a continual suppression of those loftier guiding qualities which, as we have seen, are the later effects of civilization upon the individual character; while the attributes of savagery, the lower sensual passions--our common inheritance from pre-social times--are allowed full play in supplying material for the imagination and in shaping the purposes of life. Mr. Parton's remark, therefore, which is absurd as applied to tobacco, is a profound physiological verity as applied to the narcotic action of alcohol,--it tends to make us think and act like barbarians, for it allies us psychologically with barbarians. These considerations throw some light upon the way in which chronic narcosis, like other diseases entailing structural derangements, may be transmitted from father to son. As a matter of observation it is known that drunkenness may run through whole families, no less than gout or consumption. Or, like other diseases, it may skip one or two generations and then reappear. It is evident that the children of a drunkard, _born after_ the establishment of nervous degeneration in the father's system, may inherit structural narcosis attended by a latent craving for alcohol. Some unfortunate persons thus seem to be born sots, as others are born lunatics or consumptives.