NOTICE 



The investigation upon which this report is based was undertaken 

 by the Forest Service in co-operation with the Commonwealth of Vir- 

 ginia, the work being done under the direction of O. T. Swan, Engi- 

 neer in Forest Products, Chief of the Office of Wood Utilization, 

 United States Department of Agriculture, Washington, D. C. The 

 statistics were compiled from data collected in 1911, covering a period 

 of one year. 



