[SUGAR] DUBRUNFAUT, A. P. Le Sucre dans ses Rapports ... ou études faites depuis 1866 sur la question des sucres, Paris: Gauthier-Villars, 1873, 2 volumes, 8°, FIRST EDITION, half titles (occasional spotting), modern green cloth. [Roth p. 29: "Reprinted letters published in the periodicals La Sucrerie Indigène and the Journal des Fabricants de Sucre. They deal with every subject of interest and of use to sugar manufacturers, which has appeared during the years mentioned"] -- J. P. Napoléon LERAS. Observations sur le Sucre. Thèse de chimie, Strassburg: G. Silbermann, 1846, 8°, FIRST EDITION, PRESENTATION COPY, front wrapper inscribed: "à Monsieur Perroz hommage de l'auteur Leras," 16 textile samples mounted on 4 leaves showing the effect of sugar on colour dyes (margins heavily spotted, later leaves torn at margins and creased at corners), modern brown cloth, original drab wrappers bound in, uncut. With 16 others in French and German, including Beaudet, Pellet & Saillard Traité de la Fabrication du Sucre (Paris, 1894, 2 vols.), Yves Henry Conditions Techniques et Financières de la Production du Sucre aux Philippines (Hanoi, 1928, with the 3 loosely-inserted folding maps), R. Frühling & J. Schulz Anleitung zur Untersuchung der für die Zucker-Industrie (Braunschweig, 1881) and Wilhelm Stieda Franz Karl Achard (Leipzig, 1928). (19)