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
Gabriel Jacques Surenne who also published books on French military subjects. Gabriel Jacques Surenne Gabriel Jacques Surenne FSA FASE (1777-1858) was a 19th-century French-born military historian living in Scotland who authored numerous publications in the fields of warfare and battle analysis and also in French grammar. He was born in Compiegne in France on 25 October 1777. His early life is unclear other than various references made by himself as to having been trained in Paris. A newspaper epitaph mentions his war service with Napoleon Bonaparte in his successful Italian Campaign. He appears in Edinburgh around 1830, both as a teacher and prodigious