Map of southern hemisphere with an imaginary line joining Tasmania to New Guinea. Relief shown pictorially. In right hand corner: 4 Hemisphaerium Australe. Publisher's ink stamp in lower right-hand corner. From: Atlas geographicus omnes orbis terrarum regiones in XLI tabulis exhibens ... / cjussu Academiae Regiae Scient. et Eleg. Litt. Boruss. ad emendatiora ... descriptus ... Berolini : ex officina Michaelis, 1753. Prime meridian: Ferro. Preface to Atlas geographicus by Leonhard Euler.