50. (1) Where an offence has been committed under this Act, any person responsible for the enforcement of this Act shall draw up a report of the offence.
(2) In any proceeding instituted under this Act, the report of the offence, signed by the person mentioned in subsection 1, shall be accepted, in the absence of proof to the contrary, as proof of the facts ascertained by him and of the authority of the person who signs such report, without other proof of his appointment or of his signature.