179 



APPENDIX VI. 



MEASUREMENT OF TIMBER. 



The contents of a round log may be obtained by measuring the diameter in the 

 middle, and calculating the volume of a cylinder of the same diameter and height. But 

 tables are oftener used for the same purpose. For standing trees, the height of which 

 can only be estimated accurately to the nearest 5 feet, a small table such as the one given 

 below, is quite sufficient. It is usual to allow 40 per cent, on logs measured in the 

 middle, for bark and waste in squaring ; and 50 per cent, on trees measured at the but- 

 nd, in order to deduct an additional 10 per cent, for taper. 



Table II. gives readily the contents of a number of pieces of wagonwood and other 

 timber of ordinary sizes. For pieces of unusual dimensions, " Hoppus' measurer" may 

 be used. 



I. TABLE SHEWING THE CONTENTS IN CUB. FT. OF BOUND LOGS. 



jg 8 

 ! 



l.a 



10 



15 



20 



LENGTH IN FEET. 

 25 3O 35 



40 



45 



50 



To get the squared contents of round logs measured in the middle take 60 per cent, of result from table. 

 To get squared contents of standing trees measured at 6ft. from tne ground, take half of result from table. 

 For trees above 60 inches in diameter, take four times the contents of a tree of same length and half 

 the diameter. 



