The extent to which, in America, as well as in Europe, to-day, young children are entrusted with the care of infants of their family, has attracted not a little attention, and the "beyond their years" look of some of these little nurses and care-takers is often quite noticeable. The advent of the baby-carriage has rather facilitated than hindered this old-time employment of the child in the last century or so. In a recent number (vol. xvii. p. 792) of _Public Opinion_ we find the statement that from June 17, 1890, to September 15, 1894, the "Little Mothers' Aid Association," of New York, has been the means of giving a holiday, one day at least of pleasure in the year, to more than eight thousand little girls, who are "little mothers, in the sense of having the care of younger children while the parents are at work." In thrifty New England, children perform not a little of the housework, even the cooking; and "little mothers" and "little housekeepers" were sometimes left to themselves for days, while their elders in days gone by visited or went to the nearest town or village for supplies. _Child-Marriages._ "Marriages are made in heaven," says the old proverb, and among some primitive peoples we meet with numerous instances of their having been agreed upon and arranged by prospective parents long before the birth of their offspring. Indeed, the betrothal of unborn children by their parents occurs sporadically to-day in civilized lands. Ploss has called attention to child-marriages in their sociological and physiological bearings (125.1. 386-402), and Post has considered the subject in his historical study of family law. In these authorities the details of the subject may be read. In Old Calabar, men who already possess several wives take to their bosom and kiss, as their new wife, babes two or three weeks old. In China, Gujurat, Ceylon, and parts of Brazil, wives of from four to six years of age are occasionally met with. In many parts of the world wives of seven to nine years of age are common, and wives of from ten to twelve very common. In China it is sometimes the case that parents buy for their infant son an infant wife, nursed at the same breast with him (234. xlii.). Wiedemann, in an article on child-marriages in Egypt (381), mentions the fact that a certain king of the twenty-first dynasty (about 1100 B.C.) seems to have had as one of his wives a child only a few days old. From Dio Cassius we learn that in Rome, at the beginning of the Empire, marriages of children under ten years occasionally took place.