Whenever, by reason of the destruction of the building in which the Supreme Court of Appeals was held, or by reason of any building in which any courts are appointed to be held being in the possession of, or threatened by, a public enemy, or infected with a contagious disease, it shall seem to the Governor necessary, he shall, by proclamation, appoint a place at which such courts shall be held, so long as such reason may continue, and, when the circumstances require it, may postpone the time for holding the courts. A copy of such proclamation shall be sent to the clerk and to each of the judges of any such court, and to the president of any such county court.