Volumes Not Values: Canadian Sailing Ships and World Trades. Edited By David Alexander and Rosemary Ommer. St. John's, Newfoundland, Memorial University of Newfoundland, 1979. Pp. viii + 373. $10.00, paperback.Power on Land and Sea: 160 Years of Industrial Enterprise on Tyneside. A History of R. & W. Hawthorn Leslie & Co. Ltd. Engineers and Shipbuilders. By Joe F. Clarke. Newcastle upon Tyne, Hawthorn Leslie Ltd., 1979. Pp. x + 118. £3.50, paper; £8.00, cloth.