Rare separately issued wall map of the world, published for the Revue Geographique International in 1877.
The focal point of the map is the physical, hydrographical and climatological elements of the world. Located are numerous features including prevailing currents and winds. Curiously, the map names a "Magnetic Meridian" and a "Magnetic Equator," which are perpendicular great circles rotated such that the meridian passes through both magnetic poles. Antarctica is starting to be outlined.
The map references the work of a number of contributors, including Mr. Begal, Mr. Kerhallet, and Mr. Legenre-Decluy. Notes at the base of the page denote interesting features such as the mean elevation of continents, the altitude limits for glaciation, and average temperatures. The highest recorded temperature at the time was 118 degrees in Senegal.
The map was published for the Revue Geographique International, a French-language magazine which focused on geography. This map served to advertise the magazine, with text at the bottom stating the subscription costs. This map was compiled by "Decluy" and printed by E Dufrenoy in Paris.