Presumptions in prosecutions under this Act

(1) In trials under this Act, it may be presumed, unless and until the contrary is proved, that the accused has committed an offence under this Act in respect of any- (a) any still, utensil, implement or apparatus whatsoever or any part or parts thereof, as are ordinarily used for the manufacture of any liquor, or (b) any materials which has undergone any process towards the manufacture of liquor or from which liquor has been manufactured, it shall be presumed, until the contrary is proved, that his possession was in contravention of the provisions of this Act. (2) It shall be presumed without further evidence, until the contrary is proved, that the accused person has committed an offence under section 40 in respect of any denatured spirit which has been or attempted to be rendered fit for human consumption.