All rules and regulations made pursuant to this part shall be promulgated as provided by law; provided, that in case of emergency where it is necessary to place a quarantine to take effect immediately, promulgation may be made by proclamation of the commissioner. Printed copies of all acts, rules, regulations, quarantines, or other notices, which shall be published by the commissioner under authority granted by this part, shall be admitted as sufficient evidence of such acts, rules, regulations, quarantines or other notices in all courts and on all occasions whatsoever; provided, that the correctness of such copies be certified to by the commissioner.