Abstract: The file contains correspondence between the Political Resident at Bushire, the Adviser to the Government of Bahrain and Bahrain Petroleum Company Limited (BAPCO) representatives on the Royalty Gas Metering System in use to determine the royalties to pay to the Sheikh of Bahrain. There is an index at the end of the file (folios 68-72).Physical description: The foliation is written in pencil, in the top right corner. It begins on the cover, on number 1, and carries on until 73, which is the last number given on the back cover of the file.