Chapter 19

14. Power. (Smith, _Commerce and Industry_, chapter ix.)

15. Mineral industries in the United States. (Bishop and Keller, Industry and Trade, part iv. Smith, _Commerce and Industry_, chapters viii, xiii, xiv, and xv.)

16. Manufacturing industries in the United States. (Bishop and Keller, _Industry and Trade_, part v.)

17. Trade routes of North America. (Smith, _Commerce and Industry_,