152 



ENGLISH WOODLANDS 



BA:DC::ba:Dc; assume that 6 a = 3 J feet, 



then^^ = ?2_^ = 35 feet. 



o 



The following table of quarter-girths and 

 lengths facilitates the calculation of contents. 



For example, if a tree has a length of 40 feet 

 and a quarter-girth of 6 inches, the cubic con- 

 tents are J of 40 = 10 cubic feet. If the quarter- 

 girth is 8 J inches, the cubic contents are 20 cubic 

 feet, and with a quarter-girth of 17 inches the 

 cubic contents are 80 feet — double the length. 



Measurement of the cubic contents of the 

 first 12 feet from the ground is a great assistance 

 in ascertaining the cubic contents of a large 

 tree. Mark with a piece of paper or something 

 prominent the top of the first 12 feet and estimate 



