27 



tests of the rate at which seasoning takes place under different conditions and of the 

 effect of different methods of piling ties. 



Bulletin 50: Cross-Tie Forms and Rail Fastenings, with Special Reference to Treated 



Timbers. 



A study of the forms of railroad ties and methods of fastening rails, the object being 

 to show how railroad ties may be made more eflficient and their life prolonged. 



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



1902. 



Results secured from various timbers which received preservative treatment and 

 were then laid in an experimental track on the Gulf, Colorado and Santa Fe Rail- 

 way, near Pelican, Tex. 



Circular 12: Southern Pine: Mechanical and Physical Properties. 



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

 Woods. 



Circular 32 (Revised edition): Progress Report on the Strength of Structural 

 Timber. 



Three progress reports, of which the first two deal with the earlier series of timber 

 tests conducted by the Division of Forestry. 



Circular 38: Instructions to Engineers of Timber Tests. 



Circular 39: Experiments on the Strength of Treated Timber. 

 Circular 40: The Utilization of Tupelo. 



Extract 315, from the Yearbook of the Department of Agriculture (1903): Recent 

 Progress in Timber Preservation. 



Extract No. 395, from the Yearbook of the Department of Agriculture (1905): Pro- 

 longing the Life of Telephone Poles. 



FORESTRY A^D LUMBERING. 



* Bulletin 34: A History of the Lumber Industry in the State of New York. Price 



20 cents. 

 Bulletin 36: The Woodsman's Handbook. 



Chiefly tables and rules for the measurement of wood and timber, including a com- 

 parison of 43 log rules employed in 'the United States and Canada, with a brief state- 

 ment concerning the origin and use of each. 



Bulletin 61 : Terms Used in Forestry and Logging. 



A brief dictionary of words and phrases in use by forester and logger, prepared in 

 cooperation with The Society of American Foresters, and designed to promote uni- 

 formity of usage and to serve as the basis for a more careful and exact forest 

 terminology. 



Bulletin No. 73: Grades and Amount of Lumber Sawed from Yellow Poplar, Yellow 

 Birch, Sugar Maple, and Beech. 



Showing, by tallies at the mill, the amount of lumber actually sawed out from 

 certain kinds of trees of different sizes. It serves, first, to indicate the actual gain in 

 quality of the lumber with the increase of the sizes of the trees; and, second, to set a 

 limit below which trees yield too little lumber, or are too poor in quality, to pay for 

 cutting. The tables enable the lumberman to tell how much lumber of each grade 



