Volume and page number (Tomus I.186) appear in top right-hand corner. From: Mundus subterraneus ... Amstelodami : Apud Joannem Janssonium & Elizeum Weyerstraten, 1665. Map shows a cross-section of the earth's interior with magma core and underground water sources. Earth's surface shown with erupting volcano and ship. Clouds and four wind-heads surround sphere, with decorative title cartouche above and Latin text below.