Insanity, when it does exist, generally exhibits itself under the form of melancholia and dementia, and is more frequently found among the upper than among the lower classes. With the men it is generally due to intemperance and excesses, and is occasionally accompanied by paralysis. Among the women, the only cases which came under my notice were of wives whose husbands had many concubines, and of young widows. Suicide is not unfrequently practised among the latter; partly in consequence of the strict Corean etiquette, but often also caused by insanity when it does not follow immediately upon the husband's death. Another cause of melancholia--chiefly, however, among the lower classes--is a dreadful complaint, which has found its way among the natives in its most repulsive form. Many are affected by it, and no cure for it seems to have been devised by the indigenous doctors. The accounts one hears in the country of its ravages are too revolting to be repeated in these pages, and I shall limit myself to this. Certain forms of insanity are undoubtedly a common sequence to it. Leprosy also prevails in Cho-sen, and in the more serious cases seems to affect the brain, producing idiocy. This disease is caused by poverty of blood, and is, of course, hereditary. I have seen two forms of it in Cho-sen; in the one case, the skin turns perfectly white, almost shining like satin, while in the other--a worse kind, I believe--the skin is a mass of brown sores, and the flesh is almost entirely rotted away from the bones. The Coreans have no hospitals or asylums in which evils like these can be properly tended. Those affected with insanity are generally looked after by their own families, and, if considered dangerous, are usually chained up in rooms, either by a riveted iron bracelet, fastened to a short heavy chain, or, more frequently, by an anklet over the right foot. Families in Corea are generally small in number. I have no exact statistics at hand, for none were obtainable; but, so far as I could judge from observation, the males and females in the population are about equal in number. If anything, the women slightly preponderate. The average family seldom includes more than two children. The death-rate of Cho-sen infants is great, and many reasons can account for the fact. In the first place, all children in Corea, even the stronger ones who survive, are extremely delicate until a certain age is attained, when they seem to pick up and become stronger. This weakness is hereditary, especially among the upper classes, of whom very few powerful men are to be found, owing to their dissolute and effeminate life.