Commissioners were also employed for the supervision of Indian lands. Upon the recommendation of the committee appointed for Indian affairs, the Assembly in 1662 authorized the Governor to appoint a commission "to enquire into and examine the severall claimes made to any part of our neighboring Indian land, and confirme such persons who have justly invested themselves, and cause all others to remove." The English with rights to land within three miles of the natives were to assist in fencing the Indian corn fields. This was done to prevent harm to the Indian crops by hogs and cattle of the colony. Commissioners appointed were to designate the time and number of English to aid in the construction. Other commissioners were to view annually the boundaries separating the two people. The commissioners diligently enforced the provisions of these laws which underwent few changes until the outburst of hostilities in Bacon's Rebellion. In 1678 the additional expense of the Indian war led the colony to modify temporarily its former provisions in order to obtain more revenue from land. All territory recently assigned to the Indians but then abandoned and any land then occupied that should later be deserted were to be sold. The proceeds from the sale were to be used in the public interest to defray the expense of the war. This regulation applied only to land abandoned by the Indians. The colony continued to protect the natives in other lands assigned them as is exemplified in the region south of the James River. In 1665 the Indian boundary line for the area was designated to run from the southern branches of the Blackwater River to the Appomattox Indian town, and from there to Manakin Town located only a few miles above the Fall Line. By 1674 some of the colonists had crossed this line and were settling on the territory of the Nottoway Indians. When the encroachment was called to the attention of the Governor and Council, they ordered the English to withdraw immediately, and in the next instructions to the surveyor of the colony they again forbade the location of new grants in the region designated as Indian land.