GEOLOGY Map basement of the vulcanico magma; the German Jesuit Athanasius Kircher (1602-1680). Kircher was one of the great enciclopedisti of the 17th century. In 1638 after to have assisted all' eruption dell' Etna and of the Stromboli and approval the active Vesuvio; published its observations in the volume Mundus Subterraneus; printed for the first time in 1664-1665 and which reprinted the third time in 1678. In this edition the Kircher dealt all this that regarded the Earth; geography; earthquakes; volcanos; lakes and the coasts; the marine currents; the fossils; the minerals. The Earth was described as a sphere from whose fire direction center was circulated of the culverts that fed volcanos.