Governor Stuyvesant being informed of his presence, immediately crossed the East river to Long Island, to meet the Connecticut governor, who was thus encroaching upon the Dutch domains. He urged upon Governor Winthrop the claims of Holland upon New Netherland, by the apparently indubitable title of discovery, purchase and possession, as well as by the clearly defined obligations of the Hartford treaty of 1650. It will be remembered that by that treaty it was expressly agreed that, "Upon Long Island a line run from the westernmost part of Oyster Bay, in a straight and direct line to the sea, shall be the bounds between the English and the Dutch there; the easterly part to belong to the English, the westernmost part to the Dutch." But here was Governor Winthrop, in total disregard of this treaty, many miles west of this line, endeavoring to wrest several towns from the Dutch dominion, and to annex them to the Connecticut colony. All Governor Stuyvesant's arguments were unavailing. Governor Winthrop paid no heed to them. He knew very well that the Dutch governor had no military power with which to enforce his claims. Governor Winthrop therefore contented himself with simply declaring that the whole of Long Island belonged to the king of England. "All Governor Stuyvesant could address, writes O'Callaghan, "was of no avail. The country was the king's, the people his subjects. When priority of title from the Indians was invoked, those from whom the Dutch purchased were, it was replied, not the right owners and had no right to sell. But when deeds which the English held from natives, happened to be older than those of their opponents, then the title could not be gainsayed. All must be received without contradiction. "The truth is, the Directors in Holland were mistaken in their reliance upon Winthrop's friendship. He now manifested the greatest hostility to the Dutch, and was the head and front of all the opposition they experienced. He was no doubt well-advised of the designs of the Duke of York, and of his brother the king of England, which were about to develop themselves against this province." While New Netherland was thus fearfully menaced by England, the internal affairs of the province were in a state of prosperity. The rich soil was producing abundant harvests and farms were extending in all directions. Emigrants were continually arriving and were delighted with their new homes. The population of the province now amounted to full ten thousand. New Amsterdam was a flourishing city, containing fifteen hundred inhabitants.