This mid-nineteenth-century French atlas map depicts South and Southeast Asia, encompassing the Indian subcontinent, Tibet, Burma, Thailand (Siam), Vietnam (Annam, Tonquin, Cochinchine), and the Malay Peninsula. Published in Paris by the educational publishing house of Eugène Belin, the map was compiled by Abbé Drioux and Charles Leroy, major figures in French geographical instruction during the Second Empire. It offers a detailed geopolitical snapshot of the region during a period of expanding European imperial influence, delineating the British Presidencies of India (Bengal, Bombay, Madras, Agra), independent native states, the Sikh Confederacy, and the administrative regions of Indochina. Geographically, the map provides extensive topographical and hydrographical detail. Key physical features including the Himalayan range, the Ganges, Indus, Irrawaddy, and Mekong rivers are rendered with delicate hachuring. Coastal waters, gulfs, and island groups—such as the Maldives, Laccadives, Andaman, Nicobar, and Ceylon—are clearly identified. A thematic key in the upper right quadrant categorizes territories under British, French, Portuguese, and independent control, providing historical context on the colonial divisions of Asia. The visual composition reflects classic nineteenth-century French cartographic aesthetics, defined by crisp engraved line work, refined typography, and neat coordinate borders. A block of linear distance scales is positioned in the lower-left corner, providing conversions for marine leagues, English miles, and Indian leagues. The lower margin retains explicit engraver and publisher attributions, illustrating the high quality of Parisian cartographic production in the 1860s.