Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 111, § 62Q

The said trustees shall have the same powers and shall perform the same duties in the management and control of the said hospital for state wards as are vested in and required of them in their administration and control of the hospital school under sections sixty-two J to sixty-two O, inclusive, so far as applicable. No state wards shall be admitted to or received at the said hospital without the approval of the trustees and the written order of an authorized agent of the department, nor released from said hospital without notice to the said department.