Where any tenant in possession of any lands exceeding two acres in extent (whether with or without a written lease) shall, either at the date of entering upon the lease or at any other time, have granted a letter of removal, F1. . .such letter of removal shall have the same force and effect as an extract decree of removing, and shall be a sufficient warrant for ejection to the like effect as is provided in regard to a lease or extract thereof, and shall be operative against the granter of such letter of removal or any party in his right within the same time and in the same manner after the like previous notice to remove: Provided always that where such letter is dated and signed within twelve months before the date of removal or before the first ish, if there be more than one ish, it shall not be necessary that any notice of any kind shall be given by either party to the other.