Mass. Gen. Laws ch. 131 § 86
A person shall not without right enter in or upon any building or other structure, or any area of land, flats or water, set apart and used by or under authority of the director for conducting scientific experiments or investigations or for propagation, or fish in waters so set apart and used, after the director has caused printed notices of such occupation and use and the purposes thereof to be placed in a conspicuous position upon any such building or other structure or adjacent to any such area of land, flats or water, and shall not injure or deface any such building or other structure or any notice posted as aforesaid, or injure or destroy any property used in such experiments or investigations or for such purposes, or otherwise interfere therewith.
Mass. Gen. Laws ch. 131, § 86