An arm of a river, flowing between islands and the main-land, and sep- arating the islands from one another. Sloughs have not the breadth of the main river, nor does the main body of water of the 6tream flow through them. Dunlieth & D. Bridge Co. v. Dubuque County, 55 Iowa, 565, 8 N. W. 443. SLOUGH SILVER 1093 SOCAGIUM IDEM EST