2O2 



FELLING AND 



Diameter 



at 4' 3" 



in inches. 



6 



7 

 8 



9 

 10 

 li 



12 

 13 



Length of 



measurable 



timber. 



40 



54 

 60 



62 

 68 

 70 



Quarter-girth 



under bark in 



middle, in inches. 



61 



7 



Volume of tree in 



cubic feet and 



inches. 



Ft. In. 



2 II 



3 

 8 



7 

 7 

 6 



5 



6 



8 



12 



15 



19 ii 

 23 9 



* This tree was evidently not a good sample tree, as its length of useful 

 timber is less than it should be. 



The following figures show how the volume of the wood was 

 ascertained. 



316 



Total number of trees per acre = 316. 



Total volume under bark = 3,204 cubic feet. 



Average volume per tree = 10 cubic feet. 



If it is impossible to find a sample tree of exactly the size 

 of the inch-class, one as near as possible must be chosen and 

 cut. In this case a slight allowance must be made in the 

 volume of the sample tree. Thus, if a 9-inch tree cannot be 

 found, but one 9-3 or 9-3 inch is found and cut, its volume may 

 be reduced by i cubic foot before the calculation of the volume 

 of the inch-class is made. In the same way, if a tree 8-8 or 

 87 is found, its measured volume may be increased by from 



