Austin established the first permanent Anglo-American settlement at San Felipe de Austin on the Brazos river.
Three abortive Anglo-American invasions during the first few years of the century indicated the future trend of events.
Green was chairman of the Old Testament committee of the Anglo-American Bible revision committee.
In 1877 he was counsel for Great Britain before the Anglo-American fisheries arbitration at Halifax; in 1897 he was a joint delegate to Washington with Sir Wilfrid Laurier on the Bering Sea seal question; and in1898-1899a member of the Anglo-American joint high commission at Quebec.
The packing of the press requires more manual labour than in the case of the Anglo-American press; moreover, the Marseilles press offers inconvenience in keeping the bags straight, and the pressure cannot be raised to the same height as in the more modern hydraulic presses.
In 1877 he was the Canadian nominee on the Anglo-American fisheries commission at Halifax, and rendered brilliant service.
In 1892 he was appointed associate counsel for the United States on the Bering Sea Commission, and later was American counsel or agent before several important arbitral tribunals or mixed commissions, including the Alaskan Boundary Tribunal (1903), the Hague Tribunal for Arbitration of the North Atlantic Fisheries (1910), and the Anglo-American Commission (1911) for settling outstanding claims between Great Britain and the United States.