TIMBER MEASURING. 



6-inch quarter-girth will give contents equal to 

 the entire length in feet. 



3 



10 



12 

 



17 

 - 1 - ' 



24 



^ 

 291 

 31-f ,, 

 34 

 36 



If 



9 

 * 



^JT 



3 



3^ 



4 



^ 

 G 



7 

 8 

 9 



The sliding rule is useful for determining contents. 



The proper allowance to be made for bark is half-an-inch 

 for oak and elm under 12 inches girth, and an inch for all 

 beyond, but it is quite impossible to fix upon any one uniform 

 scale that will meet even the majority of circumstances. 

 Trees growing in exposed situations will frequently have 

 bark almost double the thickness of those of a similar size 

 in the woodland. My plan has always been to allow for the 

 bark of each tree at the time of measurement. 



Measuring Standing Timber. For this a pliable pole 18 

 ft. long, marked in feet, and the girt-strap already referred 

 to are the necessary equipment. In estimating the number 

 of feet of timber upon a large area, it is not always necessary 

 to measure each tree separately, particularly when the whole 

 plantation is composed of one species, and the individual trees 

 are of about the same age and size, as by multiplying the 

 number of specimens by the average content per tree, a very 

 iust calculation will be arrived at. Great care in tbe selec- 



193 o 



