Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 179, § 24

If a proprietor puts horses, cattle or other beasts into the general field contrary to the regulations of the proprietors, either by putting in more than the number allowed him, or by putting them in before the day fixed therefor, or by keeping them therein longer than the time limited, he shall be considered a trespasser, and his beasts may be impounded as taken doing damage.