Lot Essay
Fine copy of the Jesuit polymath Kircher's monumental book on the subterranean or 'hidden' world. Its value was immediately recognised: a review in the Journal des Savants of 1679 commented that "it would take a whole journal to indicate everything remarkable in this work". Based on his experiences of the eruption of Vesuvius in 1637 and an earthquake in Calabria in 1638, Kircher believed that the subterranean world was composed of two interlocking systems of fire and water; the double-page plates illustrating this theory are amongst the most famous in the book (see front cover illustration).