Description Des Barometres A Niveau Constant Et A Niveau Variable

Paris, Bourgogne et Martinet, 1841 ; 8vo (204 x 132 mm) ; 19 pp. 8vo (199 x149 mm). Sewn, plain soft paper wrappers, complete with its folding engraved plate. Description of the barometers, with instructions on how to repair them, transport them and correct the capillary depressions that affect them. Extract from the minutes of the meeting of the Société Géologique de France held in Angers on 4 September 1841. A rare and complete copy.