THE fact is generally admitted that the use of alcohol is the sole cause in upwards of one fourth of the cases of insanity, according to diagnosis on admission to asylums. Statistics gathered from all parts of the civilized world exhibit remarkable uniformity on this point. Taking men and women together, this is the result; but taking them separately, the per cent of women insane on account of alcohol is generally a mere fraction — one fourth, or such a matter — of the general average. Thus it appears that the predominance of males in the insane population is chiefly due to alcohol. The statement of these facts does not take into account a large number of cases where alcohol as a partial cause was the real determining factor, without which other causes would probably not have been sufficient to produce derangement. It leaves out of consideration all the hereditary mental disorders — idiocy, deficiency, and epilepsy — which are caused or accentuated by the influence of alcohol. Not all the insane are in asylums or under surveillance. It is probable that a number equal to those confined are constantly at large in the world, consisting of the various individuals more or less deranged temporarily by the use of liquor. About half of the 7,500 murders estimated to have been committed in the United States in 1915 were committed by this class of insane. This prevalent temporary dementia was also the cause of thousands of other crimes of violence, of suicides, and disastrous failures of mind under responsibility of various kinds. It costs over $5,000,000 each year to care for these alcoholic insane in the United States, and the voters pay the bill. ONE insane person in every four owes his insanity to drink. According to Dr. Rosanoff, there are 46,605 insane in the United States whose insanity is chargeable to drink.