Officially, the United States recognized the validity of the Indian claims; but the pioneer homeseeker was not so certain to do so. From about 1775 the country south of the Ohio filled rapidly with settlers from Virginia and the Carolinas, so that by 1788 the white population beyond the Blue Ridge was believed to be considerably over one hundred thousand. For a decade the "Indian side," as the north shore was habitually called, was trodden only by occasional hunters, traders, and explorers. But after Clark's victories on the Mississippi and the Wabash, the frontiersmen grew bolder. By 1780 they began to plant camps and cabins on the rich bottom-lands of the Miamis, the Scioto, and the Muskingum; and when they heard that the British claims in the West had been formally yielded, they assumed that whatever they could take was theirs. With the technicalities of Indian claims they had not much patience. In 1785 Colonel Harmar, commanding at Fort Pitt, sent a deputation down the river to drive the intruders back. But his agents returned with the report that the Virginians and Kentuckians were moving into the forbidden country "by the forties and fifties," and that they gave every evidence of proposing to remain there. Surveyors were forthwith set to work in the "Seven Ranges," as the tract just to the west of the Pennsylvania boundary was called; and Fort Harmar was built at the mouth of the Muskingum to keep the over-ardent settlers back. The close of the Revolution brought not only a swift revival of emigration to the West but also a remarkable outburst of speculation in western land. March 3, 1786, General Rufus Putnam and some other Continental officers met at the "Bunch of Grapes" Tavern in Boston and decided that it would be to their advantage to exchange for land in the Seven Ranges the paper certificates in which they had been paid for their military services. Accordingly an "Ohio Company" was organized, and Dr. Manasseh Cutler--"preacher, lawyer, doctor, statesman, scientist, land speculator"--was sent off to New York to push the matter in Congress. The upshot was that Congress authorized the sale of one and a half million acres east of the Scioto to the Ohio Company, and five million acres to a newly organized Scioto Company.