"The re-print contains an Avertissement, parts of which I have thought worth inserting, as well as a letter of M. Bayen to the Abbé Rozier.—The first gives a short account of Rey, and mentions some facts which shew his work to have been well known and highly esteemed by Professor [Jakob Reinbold] Spielman of Strasbourg, as late as the year 1766, and to have been honourably spoken of by M. de Bordeu, circumstances which make Lavoisier's ignorance of its existence still more extraordinary."