The agricultural system of New England was not favorable to the use of slaves in the fields, yet there are occasional glimpses of Indian slaves employed in agricultural pursuits. In the account book of Lieutenant Stephen Longfellow, 1710, appears the item: “Bouston one day to plant”. Bouston was his Indian slave.[887] It has been considered probable, judging from the number of negro and Indian slaves in Rhode Island, that both were an important factor in developing the stock farming of the colony.[888] The newspaper advertisements of the day offer some information on this point: “A Carolina Indian man fit for any service within doors or without”;[889] “An Indian boy about sixteen years old, fit for either sea or land service”;[890] “An Indian man ... fit for any service”;[891] “A Survanam Indian man, twenty-five years of age, who has been in the country thirteen years, fit for service in either country or town, and who can mow well”.[892] In all the southern colonies Indian slaves worked in the fields side by side with the negroes up to the time of the Revolution.[893] The discovery, about 1693, of rice as a profitable staple for export, made necessary a large supply of labor in South Carolina; hence along with the negroes so largely imported to meet the demand, the Indian slaves worked also as the plantation system grew. In South Carolina, Governor Moore employed some of his Indian slaves in tilling his fields.[894] The instances of Indian slaves employed by their owners in manual occupations are more numerous in New England than elsewhere. The newspapers furnish instances like the following: “An Indian lad about eighteen years old, a cooper by trade”[895] “... can do anything at the carpenter’s trade”;[896] “An Indian lad ... he can work at the weaver’s trade”.[897] Similar advertisements are found in the New York papers: “An Indian man ... a good carpenter, wheelwright, cooper and butcher”.[898] Such instances are to be found even in the south.[899] The training of Indian slaves to skilled labor was not generally considered politic, however, since it interfered with the coming to the colonies of white craftsmen who were so much desired. In 1743 or 1744, a committee in South Carolina, appointed to consider the most effectual means of increasing immigration to the province, included in the bill which it originated, a clause prohibiting the bringing up of negroes and other slaves to those mechanical trades in which white persons are usually employed.[900]