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The border of the Tenasserim Division of British Burma (Tanintharyi Region, Myanmar) is highlighted in orange on this set of six map sheets, showing the boundary with Siam (Thailand) to the east, and the islands off the west coast.

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.