Still valuable today for its insight into the workings of the Siamese (Thai) court and its diplomatic relations in the mid-nineteenth century, this 1857 two-volume study was the most successful of Bowring's varied body of work. It also contains an introduction to the country of Siam and its people.

Published in two volumes in 1857, this was the most successful work of the linguist and politician Sir John Bowring (1792-1872). His varied career included work as an editor and translator, service as an MP in Britain and as a consul in China, and the controversial governorship of Hong Kong. His appointment to this last post in 1854 saw him aggressively assert British interests with little regard for Asian sensibilities. The following year he travelled to Siam (Thailand) to negotiate a treaty with that country which became a model for future agreements, giving the Siamese government an insight into Western diplomacy which would be invaluable. Volume 2 covers the political make-up of the nation, containing chapters on its dependencies and diplomatic relations, including an account of the work done by Bowring and his party. Also featured are personal accounts from long-term foreign residents of Siam and writings by its king, Mongkut (1804-68).