20 Frith Street been presented to the museum of Görlitz by Baron de Gersdorf. (Baron von Gersdorff from Saxony, possibly?). Gersdorf authenticated the first ascent of Mont Blanc by Jacques Balmat and physician Michel-Gabriel Paccard in 1786. Exchaquet was also the director of mines and foundries at Servoz in Haut-Faucigny, where attempts were made to emulate the success of the English steel-makers who, however, were using the very best imported Swedish Oregrounds iron. In 1816 Troye co-authored with one S. Glover "A Description of the Inundation of the Valley of Bagnes in Swisserland". Troye published an account of Mont Blanc and his models
Jacques Gabriel Jacques Gabriel Jacques Gabriel (1667–1742) was a French architect, the father of the famous Ange-Jacques Gabriel. His mother was a cousin of Jules Hardouin-Mansart and his father, another Jacques Gabriel was a masonry contractor for the "Bâtiments du Roi", the French royal works, and the designer of the Château de Choisy for the king's cousin, La Grande Mademoiselle. The younger Jacques Gabriel was appointed one of the "controlleurs généraux" at the "Bâtiments du Roi" in 1688, at the age of twenty-one. Two years later he was sent to accompany Robert de Cotte on an eighteen-month sojourn in Italy, sharpening his