West of here, on the Colorado. Brine springs used by Indians as infirmary or health resort. Increased operations in Civil War to make Army supply, for the men, cavalry horses and mule teams; and for general use for table and ranch purposes. To pump brine from the spring, a horse driven in a circle operated a lift that filled troughs upon a 40-foot-high scaffold. Cedar boughs placed in the troughs concentrated the brine, which filtered down into iron kettles that boiled one bushel of salt out of 50 bushels of brine.