The Council shall be presided over at its meetings by the Mayor, or in his absence by the Recorder; or in the absence of both Mayor and Recorder, by one of the Councilmen selected by a majority of the Council present; and a majority of the Council shall be necessary to form a quorum for the transaction of business. But no member of the Council of the Town, shall vote upon any order, measure, resolution or proposition in which he may be interested, other than a citizen of said Town.