1899, p. 415. Henry S. Graves, _The Practice of Forestry by Private Owners_. 1900, p. 199. Hermann von Schrenck, _Fungous Diseases of Forest Trees_. 1902, p. 145. William L. Hall, _Forest Extension in the Middle West_. 1902, p. 265. A. D. Hopkins, _Some of the Principal Insect Enemies of Coniferous Forests in the United States_. 1902, p. 309. Overton, W. Price, _Influence of Forestry on the Lumber Supply_. 1903, p. 279. James W. Toumey, _The Relation of Forests to Stream Flow_. 1903, p. 313. A. D. Hopkins, _Insect Injuries to Hardwood Forest Trees_. 1904, p. 133. E. A. Sterling, _The Attitude of Lumbermen toward Forest Fires_. 1904, p. 381. A. D. Hopkins, _Insect Injuries to Forest Products_. 1905, p. 455. Henry Grinell, _Prolonging the Life of Telephone Poles_. 1905, p. 483. J. Grivin Peters, _Waste in Logging Southern Yellow Pine_. 1905, p. 636. Quincy R. Craft, _Progress of Forestry in 1905_. 1907, p 277. Raphael Zon and E. H. Clapp, _Cutting Timber in the National Forests_. U. S. Department of Agriculture, Division of Entomology Bulletins: No. 11. n. s. L. O. Howard, _The Gypsy Moth in America_. No. 28. A. D. Hopkins, _Insect Enemies of the Spruce in the Northeast_. No. 32. n. s. A. D. Hopkins, _Insect Enemies of the Pine in the Black Hills Forest Reserve_. No. 48. A. D. Hopkins, _Catalog of Exhibits of Insect Enemies of Forest and Forest Products at the Louisiana Purchase Exposition, St. Louis, Mo._, 1904. No. 56. A. D. Hopkins, _The Black Hills Beetle_. No. 58. Part 1, A. D. Hopkins, _The Locust Borer_. No. 58. Part II, J. L. Webb, _The Western Pine Destroying Bark Beetle_. U. S. Department of Agriculture, Bureau of Plant Industry, Bulletins: No. 32. Herman von Schrenck, _A Disease of the White Ash Caused by Polyporus Fraxinophilus_, 1903. No. 36. Hermann von Schrenck, _The "Bluing" and "Red Rot" of the Western Yellow Pine_, 1903. _Report of the Commissioner of Corporations on the Lumber Industry_, Part I, _Standing Timber_, February, 1911. The latest and most reliable investigation into the amount and ownership of the forests of the United States. Ward, H. Marshall, _Timber and some of its Diseases_. London: Macmillan & Co., 295 pp. An English book that needs supplementing by information on American wood diseases, such as is included in the list of government publications given herewith. The book includes a description of the character, structure, properties, varieties, and classification of timbers. CHAPTER I. THE STRUCTURE OF WOOD.