Michigan Compiled Laws, Chapter 4. Legislature § 4.202

Sec. 2. It shall be and hereby is made the duty of the secretary of state to make his certificate of the date of the end of the session of the legislature now in session, and of each and every session of the present or any succeeding legislature hereafter to be held which certificate shall be printed and published with the laws of the session of the legislature to which it refers which certificates and each of them so published, as aforesaid, shall be received as prima facie evidence of the facts therein stated in all the courts of this state.