206 



A NATIONAL PLAN FOR AMERICAN FORESTRY 



which will follow. The present discussion will be confined to the 

 important aspects of the situation as to forest drain. 



Saw-timber 

 Trees 



Cordwood 

 Trees 



Combined 

 Drain 



4 6 8 10 



Billion Cubic Feet 



14 



16 



Softwood 



Hardwood 



FIGURE 10. Drain (cut and losses) on the commercial forests of the United States by character of growth 



and class of wood. 



The estimate of present annual drain on the commercial standing 

 timber in the United States is more than 16 billion cubic feet (table 10 



Total 

 Drain-- 



FIGUBE 11. Drain on the commercial forests of the United States through use or loss from destructive 

 agencies, shown by character of growth and class of wood. 



and figs. 1 and 11). In this total, the figures for timber cut are based 

 upon the average quantity of commodities produced from domestic 



