ANNOUNCEMENT 



The study upon which this report is based was undertaken by 

 the Ohio Agricultural Experiment Station in cooperation with the 

 Forest Service, the work being- done under the direction of Edmund 

 Secrest, Forester of the Experiment Station, and O. T. Swan, In 

 charge Office of Industrial Investigations, Forest Service, United 

 States Department of Agriculture. The Statistics were compiled 

 from data collected in the summer of 1912, covering 1 a period of one 

 year from January 1 to December 31, 1911, inclusive. By the terms 

 of this cooperative agreement, the Ohio Agricultural Experiment 

 Station is authorized to publish the findings of the investigation. 



