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 Breaking Load of Beam. Pp. 20. 4. 



No. 10. Progress 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 484 inches, 

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

 1890. 



REPORTS ON FORESTRY. 



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

 ture, in pursuance of an act of Congress approved August 15, 1.S7G. By Frankliii 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, 1870. By Franklin B. Hough. 

 Pp. 01 S. Index. 1880. 



Vol. III. Report'upon Forestry, prepared under the direction of the Commissioner of Agri- 

 culture, in pursuance of an act of Congress approved August la, 1870. By Franklin B. Hough. 

 Pp. .",18. Index. 1882. 



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



ANNUAL REPORTS OF CHIEF OF DIVISION OF FORESTRY. 



| For years 1884-189.3, 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 Department of Agriculture for 1897. 



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

 1893, 1894, 1895, 1896,1897. 



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: 

 Report for 1886 



Forestry problems of 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 of forestry work. 



Tree notes. 



Condition of forestry interests in the States. 

 Report for 1888 



Forest influences. 



Cultural and trade notes. 

 Report for 1889 



Seedling distribution. 



Timber-culture acts. 



Osier culture. 



Influence of forests on water supplies. 

 Report for 1890 



Wood-pulp industry. 



Tests of Northern and Southern oak. 



Forestry education. 



Artificial rainfall. 



