William HUBER (1830-1895), geographer and civil engineer. Autograph manuscript signed, "Mesure des hauteurs", 27 pp. in-folio, illustrated with 6 ink sketches. [1875]. Scratches and numerous corrections. Important manuscript forming the 1st chapter (pp. 1 to 26, "physical geography") of the Instructions générales aux voyageurs published by the Société de Géographie (Delagrave, 1875).