SAUSSURE, Horace Bénédict de. Essais sur l'Hygrométrie, Neuchatel: Samuel Fauche, 1783, 4°, FIRST EDITION, 2 engraved plates, contemporary tree calf, spine gilt, (minor wear at edges, some leaves lightly and evenly browned, some pale spotting or soiling, mostly marginal). [Norman 1894; Honeyman VI, 2759 and 2760; Sparrow 174]