The rarity of glycosuria among the insane.—When one observes how frequently nervous influences can be regarded as predisposing factors in glycosuria, one naturally expects in communities of the insane to find the condition common. Yet I think the asylum medical officer who follows the routine habit of making a careful examination for sugar in the urine of every case with which he is entrusted, is rarely rewarded for his trouble. The frequency with which it does occur is differently stated by different individuals. But with one exception, the percentages of the insane who suffer from this dystrophy would appear to vary in different asylums from about five to two.