APPEKDIX. 33 



FOREST, BOTANICAL, AND DENDROLOGICAL STUDIES. 



*Bulletin 17. Check List of the Forest Trees of the United States. (Price 15 cents.) 



^Bulletin 28. A Short Account of the Big Trees of California. (Price 15 cents.) 



Bulletin 40. A New Method of Turpentine Orcharding. 



^Bulletin 59. The Maple Sugar Industry. (Price 5 cents.) 



Circular 34. Practical Results of the Cup and Gutter System of Turpentining. 



Circular 148. Practical Results in Basket Willow Culture. 



Farmers' Bulletin 252. Maple Sugar and Sirup. 



Farmers' Bulletin 341. The Basket Willow. 



PHYSICAL PROPERTIES, SEASONING, AND PRESERVATIVE TREATMENT 



OF TIMBER. 



*Bulletin 6. Timber Physics, Part I; Preliminary Report. (Price 10 cents.) 



*Bulletin 8. Timber Physics, Part II; Progress Report. (Price 15 cents.) 



*Bulletin 10. Timber: An Elementary Discussion of the Characteristics and Proper- 

 ties of Wood. (Price 10 cents.) 



^Bulletin 41. Seasoning of Timber. (Price 25 cents.) 



*Bulletin 50. Cross-Tie Forms and Rail Fastenings, with Special Reference to 

 Treated Timbers. (Price 15 cents.) 



^Bulletin 51. Report on the Condition of Treated Timbers Laid in Texas, February, 

 1902. (Price 5 cents.) 



*Bulletin 70. Effect of Moisture upon the Strength and Stiffness of Wood. (Price 

 15 cents.) 



Circular 15. Summary of Mechanical Tests on Thirty-two Species of American Woods. 



Circular 39. Experiments on the Strength of Treated Timber. 



Circular 40. The Utilization of Tupelo. 



Circular 46. Holding Force of Railroad Spikes in Wooden Ties. 



Circular 47. Strength of Packing Boxes of Various Woods. 



Circular 48. Kiln-Drying Hardwood Lumber. 



Circular 80. The Fractional Distillation of Coal-Tar Creosote. 



Circular 98. Quantity and Character of Creosote in Weil-Preserved Timbers. 



Circular 101. The Open-Tank Method for the Treatment of Timber. 



Circular 103. Seasoning of Telephone and Telegraph Poles. 



Circular 104. Brush and Tank-Pole Treatments. 



Circular 108. Strength of Wood as Influenced by Moisture. 



Circular 111. Prolonging the Life of Mine Timbers. 



Circular 112. The Analysis and Grading of Creosotes. 



Circular 114. Wood Distillation. 



Circular 115. Second Progress Report on the Strength of Structural Timber, 



Circular 117. The Preservative Treatment of Fence Posts. 



Circular 128. Preservation of Piling against Marine Wood Borers. 



Circular 132. The Seasoning and Preservative Treatment of Hemlock and Tamarack 

 Cross-Ties. 



Circular 134. The Estimation of Moisture in Creosoted Wood. 



Circular 136. The Seasoning and Preservative Treatment of Arborvitae Poles. 



Circular 139. A Primer of Wood Preservation. 



Circular 141. Wood Paving in the United States. 



Circular 142. Tests of Vehicle and Implement Woods. 



Circular 146. Experiments with Railway Cross-Ties. 



Circular 147. Progress in Chestnut Pole Preservation. 



Circular 151. The Preservative Treatment of Loblolly Pine Cross- Arms. 



Circular 152. The Analysis of Turpentine by Fractional Distillation with Steam, 

 [Cir. 167] 



