15. (1) The presence of at least two-fifths of the total number of members shall be necessary to constitute a meeting of the Assembly or of any of its Sections, as the case may be:
Provided that when a Section is settling the Provincial con- stitution for any Province included therein, the presence of at least two-fifths of the representatives of that Province shall be necessary.
(2) If the Chairman, on a count being demanded by a member at any time during a meeting, ascertains that the requisite number of members is not present, he shall adjourn the Assembly till the next day on which it ordinarily sits: Provided that no demand for a count to ascertain the presence of a quorum shall be made within one hour of any previous count.