Detailed map of part of Siberia, by Joseph Nicolas De L'Isle, which was included in the Atlas Russicus.
The map is centered in the area of Lake Baikal, Irkutsk, Ulan-Ude, Chita and Bratsk, showing the region to the north of Mongolia.
The Russian Academy of Sciences was created in 1724 in St Petersburg. It was not only intended to coordinate and produce science, but also to aid in solutions to practical problems. Many foreign scientists were invited to participate, one of which was Joseph Nicholas De L'Isle, the younger brother of Guillaume De L'Isle, the royal geographer in Paris.