Call of the Senate

§ 6. Call of the Senate. For the purpose of securing the attendance of Senators, a call of the Senate may be ordered at any time, but such call shall not be in order after the voting on any question has begun, nor after the third reading of a bill has been completed, nor after the motion to close debate has been ordered pursuant to section three of this Rule, unless it shall appear upon an actual count by the Presiding Officer that a quorum is not present.