Chapter V: Section 2: That every prisoner or convict sentenced as aforesaid, who

shall have no such infraction or violation of the said rules recorded against him or her during any month of the first year of his or her imprisonment, shall be entitled to a deduction from the term of his or her sentence of one day for the first month, of two additional days for the second month, and of three additional days for the third and each of the remaining months of the said first year of imprisonment, and shall also be entitled for continued good conduct during the second year, to a similar deduction of four days for each month during which he or she shall not have violated the rules aforesaid, and to a deduction of one additional day per month for each succeeding year until the expiration of the tenth year, and to an additional deduction of two days per month during each year of the remainder thereof: _Provided_, That it shall be lawful for the inspectors of said penitentiaries or prisons, if any such convicts or persons shall wilfully infringe or violate any of said rules or regulations, or offend in any other way, to strike off the whole or any part of the deduction which may have been obtained previous to the date of such offence.