Washington, D. C. Annual reports upon Washington Aqueduct, and increasing water supply of Washington, D. C., in charge of Chas. E. L. B. Davis, John G. D. Knight, and D. D.Gaillard; and Dalecarlia receiving reservoir. in charge of George H. Elliot, Chas. E. L. B. Davis, and D. D. Gaillard; app. B B B and C C C of annual report of chief, 1896.