Historical information

Found in the cellar of the former Barr's drapery shop, Sussex Street, Linton, which at one time had a doctor's consulting room. Bob Albert (who found them) assumed they were something to do with the medical practice. He gave the box of mosquito drops to Joan and Alan Giles.
Information in newspaper advertising (found via Trove) shows the drops were marketed in New South Wales, Queensland and South Australia between about 1915 and 1927. The address on the packaging suggests these particular bottles were manufactured after 1918.

Physical description

Twelve green boxes labelled 'Marne's Mosquito Drops', stored in a strong cardboard box bearing a green label, also reading 'Marne's Mosquito Drops'.
Information on individual cardboard packaging: "Marne & Co., Herbert St, Dulwich Hill, NSW / Registered under the Pure Food Act 1908 / Improved Formula 1919".