Text fr. - The nine original photographs were taken by means of the calotype process, on salt paper (pl. 36, 38, 44, 46, 47, 50, 52, 55, 56). Another ten lithographic plates are in color, some of them in dar brown or bistre in red chalk color. The books is an exquisite atlas of picturesque, views, manners, sceneries, types of vegetation, ethnological and scietific objects, panoramas and geographical maps. Trémaux the archaeologist travelled in unknown parts of Africa with a European expedition organized for the Egyptian gouvernement. The photographs taken testify of the use of one of the first photographic processes in these areas. In 1852 this book was published with lithographic plates (in b/w and color) from Trémaux’s drawings and photographs only. At a later time the author decided to enrich the publication with photographic prints. He could not, however, achieve the insertion of all the photographic plates because of the difficulty to stabilize the calotype process. - Only afe copies of this book exist. They are not exactly the same, especially in the choice of certain lithographic plates. The British Library has a lithographic plate of Tunis which is not in Tatarin copy. The Bibliothèque National copy does not have the lithographic plate corresponding to Tatarin copy plate no. 38.1. Other copies are in Lyon, in the Koninklijke Bibliotheek, Den Haag, and in the University of Chicago Library. In the Tartarin copy the lithographic plates no. 10 and 30 are missing, and instead of plate no. 44 the is ony the photo. (After antiquarian dealer Bruno Tartarin’s text in: Cat. 32. Antiquaria. Bücher, Autographen, Graphik. Antiquariatsmesse Ludwigsburg 25.-27.01.2018, p. 120-121).