It is now time to turn to the examination of that great scheme of separate and concurrent powers, which it had been proposed to confer upon the Senate, and the suggestion of which influenced to a great degree the qualifications of the members, their term of office, and indeed the entire construction of this branch of the legislature. The primary purpose of a Senate was that of a second legislative chamber, having equal authority in all acts of legislation with the first, the action of both being necessary to the passage of a law. As the formation of the Constitution proceeded, from the single idea of such a second chamber, without any special character of representation to distinguish it from the first, up to the plan of an equal representation of the States, there was a strong disposition manifested to accumulate power in the body for which this peculiar character had been gained. It had been made the depositary of a direct and equal State influence; and this feature of the system had become fixed and irrevocable before the powers of the other departments, or their origin or relations, had been finally settled. The consequence was, that for a time, wherever jealousy was felt with regard to the executive or the judiciary,--wherever there was a doubt about confiding in the direct action of the people,--wherever a chasm presented itself, and the right mode of filling it did not occur,--there was a tendency to resort to the Senate. Thus, when the committee of detail were charged with the duty of preparing the Constitution according to the resolutions agreed upon in the Convention, the Senate had not only been made a legislative body, with authority co-ordinate to that of the House, but it had received the separate power of appointing the judges, and the power to give a separate vote in the election of the executive. The power to make war and treaties, the appointment of ambassadors, and the trial of impeachments, had not been distinctly given to any department; but the general intention to be inferred from the resolutions was, that these matters should be vested in one or both of the two branches of the legislature. To the executive, the duty had been assigned, which the name of the office implies, of executing the laws; to which had been added a revisionary check upon legislation, and the appointment to offices in cases not otherwise provided for. The judicial power had been described in general and comprehensive terms, which required a particular enumeration of the cases embraced by the principles laid down; but it had not been distinctly foreseen, that one of the cases to which those principles must lead would be an alleged conflict between an act of legislation and the fundamental law of the Constitution. The system thus marked out was carried into detail by the committee, by vesting in the Senate the power to make treaties, to appoint ambassadors and judges of the Supreme Court, and to adjudicate