And this respondent, further answering the said eleventh article, says that the same and the matters therein contained do not charge or allege the commission of any act whatever by this respondent, in his office of President of the United States, nor the omission by this respondent of any act of official obligation or duty in his office of President of the United States; nor does the said article nor the matters therein contained name designate, describe, or define any act or mode or form of attempt, device, contrivance, or means, or of attempt at device, contrivance or means, whereby this respondent can know or understand what act or mode or form of attempt, device, contrivance or means, or of attempt at device, contrivance, or means are imputed to or charged against this respondent, in his office of President of the United States, or intended so to be, or whereby this respondent can more fully or definitely make answer unto the said article than he hereby does. And this respondent, in submitting to this honorable court this his answer to the articles of impeachment exhibited against him, respectfully reserves leave to amend and add to the same from time to time, as may become necessary or proper, and when and as such necessity and propriety shall appear. Andrew Johnson Henry Stanbery, B. R. Curtis, Thomas A. R. Nelson, William M. Evarts. W. S. Groesbeck. Of Counsel. CHAPTER VIII. -- ORGANIZATION OF THE COURT ARGUMENT OF COUNSEL On Thursday, March 5th, 1868, the Senate of the United States was organized for the trial of the charges brought against Andrew Johnson, President of the United States, by the House of Representatives--Honorable Salmon P. Chase, Chief Justice of the United States, presiding. The following gentlemen appeared as managers of the prosecution on the part of the House: Hon. John A. Bingham, of Ohio; Hon. George S. Boutwell, of Massachusetts; Hon. James F. Wilson, of Iowa; Hon. John A. Logan, of Illinois; Hon. Thomas F. Williams, of Pennsylvania; Hon. Benjamin F. Butler, of Massachusetts; and Hon. Thaddeus Stevens, of Pennsylvania. The following gentlemen appeared as counsel for the President: Messrs. Henry Stanbery, of Kentucky; Benjamin R. Curtis, of Massachusetts; Thomas A. R. Nelson, of Tennessee; William M. Evarts, of New York, and William S. Groesbeck, of Ohio. The following gentlemen comprised the United States Senate, sitting for the trial of the President: