Every offence by a society under this Act shall be deemed to have been also committed by every officer of the same bound by the rules thereof to fulfil the duty whereof such offence is a breach, or, if there be no such officer, then by every member of the committee of the same, unless such member be proved to have been ignorant of or to have attempted to prevent the commission of such offence; and every act or default under this Act constituting an offence, if continued, shall constitute a new offence in every week during which the same continues.