Fully informed by Preston's elaborate communication on the gravity of the situation, Dunmore acted energetically, though tardily, to prevent the execution of Henderson's designs. On March 21st Dunmore sent flying through the back country a proclamation, demanding the immediate relinquishment of the territory by "one Richard Henderson and other disorderly persons, his associates," and "in case of refusal, and of violently detaining such possession, that he or they be immediately fined and imprisoned." [169] This proclamation, says a peppery old chronicler, may well rank with the one excepting those arch traitors and rebels, Samuel Adams and John Hancock, from the mercy of the British monarch. In view of Dunmore's confidence in the validity of the Camden-Yorke decision, it is noteworthy that no mention of the royal proclamation of 1763 occurs in his broadside; and that he bases his objection to the Transylvania purchase upon the king's instructions that all vacant lands "within this colony" be laid off in tracts, from one hundred to one thousand acres in extent, and sold at public auction. This proclamation which was enclosed, oddly enough, in a letter of official instructions to Preston warning him not to survey any lands "beyond the line run by Colonel Donaldson," proved utterly ineffective. At the same time, Dunmore despatched a pointed letter to Oconostota, Atta-kulla-kulla, Judge's Friend, and other Cherokee chieftains, notifying them that the sale of the great tract of land below the Kentucky was illegal and threatening them with the king's displeasure if they did not repudiate the sale. [170] News of the plans which Henderson had already matured for establishing an independent colony in the trans-Alleghany wilderness, now ran like wild-fire through Virginia. In a letter to George Washington (April 9, 1775), Preston ruefully says: "Henderson I hear has made the Purchase & got a Conveyance of the great and Valluable Country below the Kentucky from the Cherokees. He and about 300 adventurers are gone out to take Possession, who it is said intends to set up an independent Government & form a Code of Laws for themselves. How this may be I cant say, but I am affraid the steps taken by the Government have been too late. Before the Purchase was made had the Governor interfered it is believed the Indians would not have sold." [171]