But, after the nominations at Baltimore and Philadelphia, everybody in either House of Congress who could compose any thing at all "on his legs," or in the closet, felt it incumbent upon him to contribute at least one electioneering speech to the political literature of the day. At last, on the 27th of July, Mr. Lincoln found an opportunity to make his. Few like it have ever been heard in either of those venerable chambers. It is a common remark of those who know nothing of the subject, that Mr. Lincoln was devoid of imagination; but the reader of this speech will entertain a different opinion. It opens to us a mind fertile in images sufficiently rare and striking, but of somewhat questionable taste. It must have been heard in amazement by those gentlemen of the House who had never known a Hanks, or seen a New Salem. SPEECH ON THE PRESIDENCY AND GENERAL POLITICS. DELIVERED IN THE HOUSE, JULY 27, 1848. Mr. Speaker,--Our Democratic friends seem to be in great distress because they think our candidate for the Presidency don't suit us. Most of them cannot find out that Gen. Taylor has any principles at all; some, however, have discovered that he has one, but that that one is entirely wrong. This one principle is his position on the veto power. The gentleman from Tennessee (Mr. Stanton), who has just taken his seat, indeed, has said there is very little, if any, difference on this question between Gen. Taylor and all the Presidents; and he seems to think it sufficient detraction from Gen. Taylor's position on it, that it has nothing new in it. But all others whom I have heard speak assail it furiously. A new member from Kentucky (Mr. Clarke) of very considerable ability, was in particular concern about it. He thought it altogether novel and unprecedented for a President, or a Presidential candidate, to think of approving bills whose constitutionality may not be entirely clear to his own mind. He thinks the ark of our safety is gone, unless Presidents shall always veto such bills as, in their judgment, may be of doubtful constitutionality. However clear Congress may be of their authority to pass any particular act, the gentleman from Kentucky thinks the President must veto it if he has doubts about it. Now, I have neither time nor inclination to argue with the gentleman on the veto power as an original question; but I wish to show that Gen. Taylor, and not he, agrees with the earliest statesmen on this question. When the bill chartering the first Bank of the United States passed Congress, its constitutionality was questioned; Mr. Madison, then in the House of Representatives, as well as others, had opposed it on that ground. Gen. Washington, as President, was called on to approve or reject it. He sought and obtained, on the constitutional question, the separate written opinions of Jefferson, Hamilton, and Edmund Randolph; they then being respectively Secretary of State, Secretary of the Treasury, and Attorney-General.