19. Every zamindar, tenure-holder and farmer of land shall be legally bound to preserve, as far as lies in his power, such of the permanent boundary-marks lawfully erected on his estate, tenure or farm, or on the boundary between his estate, tenure or farm, and any other estate, tenure or farm, as may be assigned to him in that respect entirely, or jointly with other persons, under the provisions of section 29, and shall give immediate notice to the Collector if any such marks are injured, destroyed or removed, or require repairs.