PRACTICAL FORESTRY. 



horizontal lines, and divided into four vertical columns. 

 To measure proceed as follows : Mark a number with the 

 scribe on the butt end of the tree, and enter a similar 

 number in the first column of the book, which will serve 

 not only to identify the particular log, but prevent any 

 risk of measuring twice. Should the taper throughout the 

 whole length of the tree be tolerably gradual, set down the 

 length in the second column of the book, opposite the 

 number already entered. At exactly one-half of the length 

 of the portion measured take the girth by passing the 

 girt-strap tightly around the stem. Put this down on the 

 third column on the same horizontal line as the number 

 and length. Should, however, as frequently happens, the 

 trunk taper not be fairly uniform throughout the entire 

 length, several measurements may require to be taken. 



As example, a tree may be 36 ft. in length, running of 

 regular taper for perhaps 12 ft., after which it branches out, 

 reducing the size of the remaining part very considerably 

 for, say another 12 ft,, where it again branches and leaves 

 the last 12 ft. of a relatively small size. With such a tree 

 it would be quite impossible to obtain anything like a 

 correct measurement by taking only one length and girth. 

 The difficulty is, however, readily got over by first measur- 

 ing the lower 12 ft., then the second, and third, giving the 

 respective lengths and girths in the same vertical columns 

 as already described. 



The measurement of these trees, in so far at least as 

 the field work is concerned, is now completed, the contents 

 being made up at leisure, by referring to " Hoppus's 

 Measurer " a book with which every forester should be 

 supplied. By squaring the quarter girth in inches, 

 multiplying by the length in feet, and dividing by 144, the 

 same result will be obtained. This is, however, a tedious 

 method, especially where large numbers of trees have to 

 be dealt with, and should only be adopted when Hoppus 

 is not at hand. 



By committing to memory the following short table of 

 quarter girths much time in calculating and consulting 

 authorities will be saved. 



