Emmanuel De Margarie (1862-1953) was librarian to the Société Géologique de France. He wrote to Sir Archibald Geikie concerning a number of geological and other scientific publications (published by Geikie and others). He commented on research into erosion, particularly the work done by Captain Clarence Edward Dutton (1841-1912) on the Grand Canyon. He also wrote about the 1885 excursion of the Société Géologique de France to which Geike was invited. In 1892 he worked on a field trip with Benajamin Neeve Peach (1842-1926). Other correpondence concerned the work of French geologists and introducing a number of students.