A. C. LAWSON, and others. The California Earthquake of April 18, 1906, Report of the State Earthquake Investigation Commission, three quarto vols. (Carnegie Institution of Washington); many plates and figures. _Italian Photographic Society_, Messina and Reggio before and after the Earthquake of December 28, 1908 (an interesting collection of pictures). Florence, 1909. R. S. TARR and L. MARTIN. Recent Changes of Level in the Yakutat Bay Region, Alaska, Bull. Geol. Soc. Am., vol. 17, 1906, pp. 29-64, pls. 12-23. WILLIAM HERBERT HOBBS. The Earthquake of 1872 in the Owens Valley, California, Beiträge zur Geophysik, vol. 10, 1910, pp. 352-385, pls, 10-23. Faults in connection with earthquakes:— WILLIAM H. HOBBS. On Some Principles of Seismic Geology, Beiträge zur Geophysik, vol. 8, 1907, Chapters iv-v. Expansion or contraction of the earth’s surface during earthquakes:— WILLIAM H. HOBBS. A Study of the Damage to Bridges during Earthquakes, Jour. Geol., vol. 16, 1908, pp. 636-653; The Evolution and the Outlook of Seismic Geology, Proc. Am. Phil. Soc., vol. 48, 1909, pp. 27-29. Earthquake construction:— JOHN MILNE. Construction in Earthquake Countries, Trans. Seis. Soc., Japan, vol. 14, 1889-1890, pp. 1-246. F. DE MONTESSUS DE BALLORE. L’art de bâtir dans les pays à tremblements de terre (34th Congress of French Architects), L’Architecture, 193 Année, 1906, pp. 1-31. GILBERT, HUMPHREY, SEWELL, and SOULÉ. The San Francisco Earthquake and Fire of April 18, 1906, and their Effects on Structures and Structural Materials, Bull. 324, U. S. Geol. Surv., 1907, pp. 1-170, pls. 1-57. WILLIAM H. HOBBS. Construction in Earthquake Countries, The Engineering Magazine, vol. 37, 1909, pp. 1-19. LEWIS ALDEN ESTES. Earthquake-proof Construction, a discussion of the effects of earthquakes on building construction with special reference to structures of reënforced concrete, published by Trussed Concrete Steel Company. Detroit, 1911, pp. 46. CHAPTER IX THE RISE OF MOLTEN ROCK TO THE EARTH’S SURFACE VOLCANIC MOUNTAINS OF EXUDATION