24 issues. Semi-monthly, unbroken run, 3 Annee, Nos. 1-24 (April 1, 1862 to March 15, 1863). Each issue 8 pages, numbered consecutively, for a total of 192 pp. With 47 tipped-in or mounted specimens of various dyes on paper, cotton, silk, etc., two on the first page of each issue, with on apparently not issued. 30.5x21.5 cm. (12x8½"), period morocco-backed boards.

The third (of four) year of this important periodical. Each issue includes lecture notes from M.E. Chevreul's "Cours de teintures des Gobelins," here in its first printing. Chevreul's color studies made him one of the most influential scientists in France during the nineteenth century. From 1824 he was director of dyeing at the Manufactures Royales des Gobelins where he taught chemistry for nearly sixty years. One of the samples, "Echantillod de Coton vert col de canard sans indigo" (p.177, 1st page of No. 23) is not present, and appears to have never been tipped-in - the printed caption includes "(Experience inachevee.)"