With their families--for the unit on the plantation is not a hand, but a family, or where three or four unmarried men or unmarried women work together, a gang. This practice, combined with the child labor in cotton mills, accounts for the large number of persons under fifteen years old--more than half the boys in some states--who are employed in gainful occupations. This is one of the most striking divergences from any kind of Northern farming where plenty of farmers' wives ride the mowing machine, and farmers' sisters pick fruit, and farmers' children drop potatoes, where foreign women often work in garden patches, but where people do not habitually employ women and children at heavy field labor. The best Negroes, unless they own land of their own, seek the form of contract most advantageous to themselves, paying either a money rent of two dollars to eight dollars an acre, or an equivalent cotton rent. It is generally believed that the renters are the people most likely to save money and buy property for themselves. In Dunleith, Mississippi, a crew of seven people came in with a hundred dollars' worth of property, and three years later went away with more than a thousand dollars' worth of accumulated stock, tools and personal property. A renter must have animals of his own, and is obliged to feed them and to keep up his tools. Some planters find that renters leave them just as they are doing well, and that the land is skinned by them. In general, however, a Negro who has the necessary mules can always find a chance to rent land. The share hand or cropper is next in point of thrift; the planter furnishes him house, wood, seed, animals, and implements; and at the end of the year the value of the crop is divided between owner and tenant, either half and half or "three fifths and four fifths," which means that the Negro gets three fifths of the cotton and four fifths of the corn. A third class is the wage hands, who in general have not the ability to rent land on any terms; they receive a house and fuel, and wages, from fifteen dollars a month up to a dollar a day. Where steady wage hands can be found, this is considered the best arrangement for the planter. Renters and croppers may be supplemented by extra work, paid for by them, or charged to them. If they get into a tight place with their cotton, the manager sends wage hands to their aid, and at picking time all available help of all ages is scraped together and sent out according to the needs of the plantation. Of course, a renter or a "cropper" may allow members of his family to work for others, if he cannot keep them busy. On some plantations tenants pay on an average nearly a hundred dollars a year for this extra help.