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A series of four maps of the Indian Ocean—one for each quarter of the calendar year—showing the direction and intensity of the winds, including around the seas of Southeast Asia. There are extensive explanatory notes.

Map of a proposed extension of a telegraph system from Rangoon (Yangon, Myanmar) to China. Includes current and projected railways, steam ship routes, and population figures for western China. From the British magazine ‘The Illustrated London News’.

Map of Burma spread over two sheets, labelled with the names of indigenous ‘tribes’ (uppercase red text), mountains, rivers, forests and plantations (teak, bamboo, sappanwood).

Chart of the Indian Ocean, showing climate and weather-related data, including around the seas and straits of Southeast Asia where trade routes are marked, along with monsoon and typhoon regions, and currents during the different monsoon seasons.

Mountain chains are represented by black lines; volcanoes by black dots. Three insets maps: expansion of Reguain—island of Taung-ywa, off the coast of Myanmar—due to volcanic activity; geology of Java (with heights of mountains); volcanoes of Luzon.

Map of the Birman Empire and Assam (modern Myanmar) with detailed text describing the region’s geography, culture, population, religion, government and history. There is an inset map highlighting Burmese islands off the coast of the Malay Peninsula.

Map of the Birman Empire and Assam (modern Myanmar) with detailed text describing the region’s geography, culture, population, religion, government and history. There is an inset map highlighting Burmese islands off the coast of the Malay Peninsula.

Maritime routes had to be adjusted in response to the changing monsoon seasons, as is seen on this late 18th century map of the Indian Ocean. Drawings of the heads of children blowing—called ‘wind-heads’—are used to indicate wind direction.

Unusually, north is located to the left of this map of East Asia, rather than the top. The text notes that shallows and reefs are marked, and that the map is based on the explorations of Portuguese ships. Illustrations include sea monsters and ships.