Filling of the vacancies.

All vacancies among the members (other than ex-officio) of any authority or other body of the University shall be filled as soon as may be convenient by the person or body who appointed, nominated or co-opted the member whose place has become vacant and the person appointed, to a casual vacancy shall be a member of such authority or body for the residue of the term for which the person whose place he fills would have been a member.