Daguerre, Sur un nouveau procede de polissage des plaques destinees a recevoir les images photographiques.... Paris`: Academie des Sciences, 1843.
In: Comptes rendus, the weekly issue for 5 March 1843, volume 16 pp 588-592 [Continuation of title];"...procede qui permet d'obtainir des resultants identiques tant que les circonstances exterieurs restent les memes." Published "letter" from Daguerre to Arago. We offer the entire weekly issue of 566-596 (30pp), removed from a larger bound collection, with the original wrappers. The paper is crisp and bright and fine.
Daguerre felt the need to remedy a problem that he attributed to the general lack of care in the preliminary cleaning and polishing of the plates (See Gernsheim, "L. J. M. Daguerre," page 119). In this letter to Arago he describes a new procedure. (A two-page but earlier version was published in Annales De Chemie et de Physique, 3 Series, Volume 7 Pages 374-37 of this same year.) $400