684 



Forestry Quarterly. 



Table 2. — (a) Distribution of construction costs on a value basis 



(b) Stumpage values based on distribution of costs shown in 



(a) 



Direct percentage 

 formula 



Gross 



profits Stump- 

 per M age 



Forest Service 

 formKla 



Stumpage 



Species 

 and products 



Poplar lumber 

 Chestnut lumber 

 Chestnut oak lumber 

 Black oak lumber 



Extract wood (cords) 



Tanbark 



Ties (pieces) 



V — c — r 

 (i-r) 



$13-20 



4-95 



4-13 



.83 



.83 



$3-30 



1 .24 



1.03 



.21 



• 25 

 .87 

 .06 



(v-c- 

 I 



V 



5 



$5-40 

 3-40 

 3.20 

 2.40 



.80 



1.70 



.09 



r)- -^ V 



$7.80 

 1-55 

 1-93 



-1-57 



.03 



1. 19 



.12 



While the foregoing discussion has referred especially to the 

 distribution of the cost of railroad or other construction charges, 

 it applies equally well to any fixed charge which must be incurred 

 in developing a given tract, whether all of the timber or only the 

 best of it is cut. Many of the overhead charges, such as depre- 

 ciation on sawmill equipment, rolling stock, and other machinery 

 are of this nature. On the other hand, the charges for mainten- 

 ance and cost of supervision seem to depend on the length of the 



