Turbine waterwheels. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid. Credit for invention of the steam turbine is given both to Anglo-Irish engineer Sir Charles Parsons (1854–1931) for invention of the reaction turbine, and to Swedish engineer Gustaf de Laval (1845–1913) for invention of the impulse turbine. Modern steam turbines frequently employ both reaction and impulse in the same unit, typically varying the degree of reaction and impulse from the blade root to its periphery. The word "turbine" was coined in 1822 by the French mining engineer Claude Burdin from the
Rosalie (steamship) serve on Puget Sound with the older sidewheelers "George E. Starr" and "Idaho". "Rosalie" was then placed on the Tacoma-Seattle-Victoria route, under Capt. Charles W. "Big" Ames as master and Capt. William Williamson as pilot. When news of the Klondike gold strike hit Seattle, "Rosalie" was pulled from service (this on July 25, 1897) for some reconstruction to prepare to go north again with the gold seekers. Capt, George T. Roberts (b. 1849) replaced Captain Ames, and George Lent, a partner in the Alaska Steamship Company, took over as engineer. Charles E. Peabody (1857-1926) assumed the all-important financial position of