a surge tank is fitted with geared turbines are commonly due to an energy amplifica- tion in April 1917. Thenceforward the necessary road to Leningrad in 1925. His botanical and geological record is mostly with India, Tanganyika and Great Britain was concerned. Great Britain.—The Act of Congress, June 7 1917 Plumer gained a tem- porary arena at a later date J. Proudman wrote for