The procedure in either House for ascertaining the general opinion upon any measure or motion differs but slightly in form, and not at all in principle. At the end of every debate the question under discussion is laid before the House by its Speaker or Chairman. This he does by rising in his place and saying, "The question is that ..." (here follows the exact words of the motion). "As many as are of that opinion say 'Aye!'; as many as are of the contrary opinion say 'No!'" (In the Lords the words "Content" and "Not Content" are substituted for "Aye" and "No.") Members or peers thereupon express their views in the required manner, and the Speaker (or Chairman), gathering what is called the "sense of the House" by the volume of sound proceeding from either party, says, "I think the Ayes (or Noes)"--or, in the Lords "the Contents" or "Not Contents"--"have it!" If the judgment of the Chair be unchallenged, the question is deemed to be resolved in the affirmative or negative, as the case may be, and nothing further remains to be done. Should, however, either party question the correctness of the Chairman's opinion, recourse is had to a division, and certain necessary formalities have to be observed before the matter is definitely settled one way or the other. When a division is challenged in the House of Commons, the Speaker (or Chairman) orders the Sergeant-at-Arms to "Clear the lobby," and the tellers' doors leading from the lobbies, as well as the door leading from the Central Hall, are immediately locked. After the lapse of two minutes, during which the loud division-bells are set ringing all over the building to summon breathless members to the Chamber, the question is again put from the Chair. If once more challenged, the Speaker names two members of either party to act as "tellers." Should no one be found willing to undertake this duty, a division cannot take place, and the Speaker declares that the "Noes" have it. If, however, tellers are duly appointed, they take their place at the exit doors leading from the two lobbies, which are now unlocked. After another interval, this time of four minutes' duration, the doors leading from the House to the lobbies are locked. Meanwhile, all members who wish to vote have left the Chamber, and are streaming through their respective lobbies, where their names are recorded by clerks, while the tellers count them as they pass through the lobby doors.