Noted for his commitment to scientific accuracy, de l’Isle scrupulously avoided speculation and unnecessary ornamentation in his maps. Abandoning the Ptolemaic model, de l’Isle was the first to show the continent without the two fictional lakes of Central Africa, said to be the source of the Nile. The location of the Niger River remains undetermined, and it is here shown as joined to the Senegal River, with the notation that some claimed it to be a branch of the Nile. This map, and its later revision in 1722, served as a model for European mapmakers for much of the 18th century.

The address of Louis Renard, Amsterdam mapseller, has been erased in the plate but remains legible.

Tooley (Africa), p. 69, Pl. 51.