Immediately upon taking his seat in the Senate, Douglas was appointed chairman of the Committee on Territories. It was then a position of the utmost importance, for every question of territorial organization touched the peculiar interests of the South. The varying currents of public opinion crossed in this committee. Senator Bright of Indiana is well described by the hackneyed and often misapplied designation, a Northern Democrat with Southern principles; Butler was Calhoun's colleague; Clayton of Delaware was a Whig and represented a border State which was vacillating between slavery and freedom; while Davis was a Massachusetts Whig. Douglas was placed, as it appeared, in the very storm center of politics, where his well-known fighting qualities would be in demand. It was not so clear to those who knew him, that he possessed the not less needful qualities of patience and tact for occasions when battles are not won by fighting. Still, life at the capital had smoothed his many little asperities of manner. He had learned to conform to the requirements of a social etiquette to which he had been a stranger; yet without losing the heartiness of manner and genial companionableness with all men which was, indeed, his greatest personal charm. His genuineness and large-hearted regard for his friends grappled them to him and won respect even from those who were not of his political faith.[240] An incident at the very outset of his career in the Senate, betrayed some little lack of self-restraint. When Senator Cass introduced the so-called Ten Regiments bill, Calhoun asked that its consideration might be postponed, in order to give him opportunity to discuss resolutions on the prospective annexation of Mexico. Cass was disposed to yield for courtesy's sake; but Douglas resented the interruption. He failed to see why public business should be suspended in order to discuss abstract propositions. He believed that this doctrine of courtesy was being carried to great lengths.[241] Evidently the young Senator, fresh from the brisk atmosphere of the House, was restive under the conventional restraints of the more sedate Senate. He had not yet become acclimated.