Untersuchungen über die Richtung und Stärke des Erdmagnetismus an verschiedenen Puncten des südwestlichen Europa
Munchen: Hubschmann'schen Buchdruckerei, 1858. First printing. Hardcover. Quarto, plain dark charcoal cloth, with bookplate giving this copy to the Royal Philosophical Society of Edinburgh. 198, CXV pp, 13 lithographed plates at rear. Very good, light foxing to both text and fore-edge of text block. "His most important work was on.....