South Australian Consolidated Acts South Australian Consolidated Acts51A—Presumption of sale on proof of supply
In any prosecution under this Act for selling any drug if it is proved that
the drug was supplied or delivered by any person to another it shall, until
the contrary is proved, be presumed that the drug was sold to the person
receiving it, by the person supplying or delivering it, and, if that person
was a servant or employee, he shall until the contrary is proved be deemed to
have sold the drug with the authority of his employer.