The emergency referred to in section 1 hereof shall be deemed to continue until March 30, 1935, unless the legislature of this state, if in session, or the governor of this state, if the legislature be not in session, shall by resolution or proclamation officially declare such emergency to have sooner terminated; and as to any other such emergency hereafter occurring, the provisions of this act shall not be effective unless and until the governor of the state shall by proclamation have declared the same to exist and invoke therein the provisions of this act. In any such case, the governor by proclamation shall have the power to declare such emergency terminated at such date certain as he may determine.