I. The first five centuries. II. The thousand years of uncertainty, A.D. 500-A. D. 1500. III. Three centuries of advance, A. D. 1500-A. D. 1800. IV. The great century, A. D. 1800-A. D. 1914. Europe and the United States of America. V. The great century in the Americas, Australasia, and Africa, A. D. 1800-A. D. 1914. VI. The great century in Northern Africa and Asia, A. D. 1800-A. D. 1914. VII. Advance through storm, A. D. 1914 and after, with concluding generalizations.