(1) Evidence that
anything was done under this Act may be given by tendering a copy of the
Gazette in which notice was published that it was done.
(2) It is to be
presumed, unless the contrary is proved, that what was done was done properly
and that every requirement for it to be done was satisfied and, if the notice
indicates when it was done, it is to be presumed to have been done when
indicated by the notice.