42 FORESTRY INVESTIGATIONS U. S. DEPARTMENT OF AGRICULTURE. 



No. 17. Recent Legislation on State Forestry Commissions and Forest Reserves. Pp. 16. 8°. 



No. 18. Progress in Timber Physics: Influence of Size on Test Results; Distribution and 

 Effect on Strength of Moisture; Maximum Uniformity of Wood; Relation of Compression End- 

 wise Strength to Bieaking Load of Beam. Pp. 20. 4°. 



No. 19. Progie^s in Timber Physics: Bald Cypress. Pp. 24. 4°. 



No. 20. Increasing the Durability of Timber. Pp. 5. 8°. 



CHARTS. 



The lessons of erosion due to forest destruction. Three colored charts, 30J by 48 J inches, 

 showing: (1) How the larm is lost; (2) how the farm is icgained; (3) how the farm is retained. 

 1806. 



REPORTS ON FORESTRY. 



Vol. 1. Report upon Forestry, prepared under the direction of the Commissioner of Agricul- 

 ture, in pursuance of an act of Congiess approved August 15, 1876. By Franklin B. Hough. 

 Pp. 650. Index. 1878. 



Vol. II. Report upon Forestry, prepared under the direction of the Commissioner of Agricul- 

 ture, in pursuance of an act of Congress approved August 15, 1876. By Franklin B. Hough. 

 Pp.618. Index. 18S0. 



Vol. III. Repoit upon Foiestry, prepared under the direction of the Commissioner of Agri- 

 eultme, in pursuance of an act of Congress approved August 15, 1876. By Franklin B. Hough. 

 Pp.318. Index. 1882. 



Vol. IV. Report upon Forestry, prepared by N. H. Eggleston. Pp. 421. Index. 1 map. 1884. 



ANNUAL REPORTS OF CHIEF OF DIVISION OF FORESTRY. 



[For years 1884-1893, inclusive, in annual reports of the Secretary of Agriculture for those 

 years. For years 1894-1896, inclusive, in messages and documents for those years. For 1897, in 

 annual reports of Depaitment of Agriculture for 1897. 



Same, issued separately in pamphlet form for the years 1886, 1887, 1888, 1889, 1890, 1891, 1892, 

 1893, 1894, 1895, 1S90 5 1897. 



From 1894 these reports refer only to administrative business; before that year they contain 

 technical matter.] 



The following subjects are more fully treated in these reports: 

 Repoit for 1886—' 



Forestiy problems oi the United States. 



General principles of forestry. 



List of ninety most important timber trees of the United States. 



Osier culture. 

 Report for 1887. (Special, not printed in report of Department of Agriculture) — 



Trade notes and tariff on lumber — mill capacity of United States. 



Systematic plan oi forestry work. 



Tiee notes. 



Condition of forestry interests in the States. 

 Report for 188S — 



Forest influences. 



Cultural and trade notes. 

 Report for 1889 — 



Seedling distribution. 



Timber-culture acts. 



Osier culttne. 



Influence of forests on water supplies. 

 Report for 1890— 



Wood-pulp industry. 



Tests of Northern and Southern oak. 



Forestry education. 



Artificial rainfall. 



