SAUSSURE, HORACE-BÉNÉDICT DE. Voyages dans les Alpes, précédés d'un Essai sur l'Histoire Naturelle des Environs de Genève. 22 engraved plates on 21 leaves; 2 folding meteorological tables; 2 folding maps. [4], xxxvi, 540, [2]; [4], xvi, 641, [1] (of [3]); [4], xx, 532, [2]; [4], 594, [2] pages, including half-titles; Volume 2 lacks last leaf (binder's directions?). 4 volumes. 4to, 249x193 mm, contemporary 1/2 sheep gilt, slight wear to top of spines; infrequent minor foxing minimally affecting engraved matter, Volume 4 opening leaves browned. handsome set. Neuchâtel: Samuel Fauche, 1779-86; Louis Fauche-Borel, 1796-96