This is a source book for the study of many aspects of Thailand of that period, There are over 80 entries from Administration of the Law, Army, Bangkok Revenue Department, Calendar and Memoranda, Clubs, Queen Mother Household, Extradition Treaty, Finance Department, Foreign Trade, Foreign Missions, Forest Department, Hackney Carriage Regulations, Hotels, Ladies? List, Legations and Consulates, Measures, Mint, Naturalization Law, Official Directory, Opium and Spirit Department, Privy Purse, Population of Siam, Provincial Gendarmerie, Rice, Royal Family, Siamese Titles, Siamese Currency to Weights and Measures.