304 JOURNAL OF FOREISTRY 



1,700,000 acres in timber limits under perpetual license, total holdings 

 are. over 4,530 square miles, conservatively estimated to contain fifteen 

 million cords." 



In another part of the circular under the heading "Property" it is 

 stated that "this supply is sufficient for about 40 years, and actually 

 much longer, as the supply is conserved by the purchases year by 

 year of pulpwood in the open market." 



Accepting these figures as substantially correct, and dividing the 

 estimated total supply of 15 million cords by 40 years, the estimated 

 duration of supply, we have an approximate annual consumption of 

 375,000 cords per year. Probably the consumption on account of 

 purchases is more than this, but for the sake of argument let us assume 

 that it is correct. If the 3.9 million acres,which the company claims 

 to own or control, would produce one-tenth of a cord per acre per year 

 there would be a perpetual supply of 290,000 cords, about four-fifths 

 the required supply. If, on the other hand, the land could be managed 

 as perpetual forest to produce one-fifth of a cord per acre per year the 

 land would produce 580,000 cords, or an amount ample for the Com- 

 pany's supply. 



Looking at the question of growth from another angle, let us 

 suppose that the present estimated capital of 15 million cords was 

 growing at the rate of 2 per cent per year, then the growth would be 

 about 300,000 cords. Whether these rough figures are correct or not, 

 it is certainly significant that a large and successful pulp company in 

 floating a bond issue makes no claim whatsoever on the basis that they 

 are practicing forestry, but instead deliberately informs the bond 

 owners that their forest capital will be used up in 40 years but that 

 it will last "actually much longer as the supply is conserved by the 

 purchases year by year of pulpwood in the open market." 



If the campaign against the destruction of forests is to be successful, 

 certainly large pulp companies like the Brown Company should take 

 the lead in raising forest crops. 



T. S. W., Jr. 



Effect of Thinning and Pruning on Diamfter Growth of 

 Wfstfrn Yfllow Pine 



In June, 1911, an empirical study was undertaken on the South Fork 

 of the Payette River watershed on the Payette National Forest in 



