And whereas there are in many parts of this kingdom certain stinted commons of pasture which are never enjoyed in severalty, but which are at certain times shut up for the better growth of the pasture, and opened on certain fixed days, from which, in particular circumstances and seasons, great inconveniencies do and may arise: it shall and may be lawful for the major part in number and value of the owners and occupiers of such common pastures present at a meeting to be held after six days notice at least given in manner herein-before directed, with the consent of the lord or lords, lady or ladies, of the manor, or his, her or their steward or agent, to postpone the opening of the said common pastures for a time not exceeding twenty-one days.