A reduced example of the FIRST GEOLOGICAL MAP OF FRANCE issued in the same year. Pierre Armand Dufrenoy (1792-1857) was a French geologist who studied in Britain in the 1820s. He worked Beaumont on a geological survey of France between 1825 and 1836. The results were published in six-sheets in 1841. This is an official reduction of that important map. Provenance: with manuscript ownership inscription on the verso of ‘Willm. Atkinson 1855’, also ‘K. C. Harris, Eastcote Middx 1947′, printed names of A. M. Lambert and Harold W. Watkinson …, Northwood, Middx’; acquired in Hertford December 2003, ‘Rodney Shirley 2004’. Tooley Dictionary.