LA PLACE, Pierre Simon. Mechanik des Himmels, Berlin: F. T. LaGarde, 1800-02, 2 volumes, 4°, contemporary half sheep gilt, gilt-lettered morocco lettering pieces on spines -- Christopher HANSTEEN. Untersuchungen über den Magnetismus der Erde, Copenhagen, 1819, volume I, 4°, 5 engraved folding plates, old wrappers, uncut and unopened (foot of spine chipped away), ex-library copy (Essex Institute Library). With Acta Germanica; or the Literary Memoirs of Germany (London, 1742) and C. Münter's Merkwürdige Visionen und Erscheinungen nach dem Tod (Hanover, 1805). (5)