228 FOEESTRY WORK 



To Find the Superficial Contents oj a Board. 



As 12 upon B is to the breadth in inches upon ^, so is 

 the length in feet upon B to the content upon A in feet 

 and fractional parts. 



Example: 12 feet 6 inches long x 15 inches. 



Set 12 on B to 15 on^, look at 12| on B, answer oppo- 

 site on B=15-7 (answer). 



To Find the Cubic Contents of Round Timber by Square 

 oj \ Girth Measurement. 



Length on C against 12 on D, then against the | girth 

 on D=answer on C. 



Example: 20 feet long x 8| inches \ girth. 



Set 20 on C against 12 on D : : 8-| on D : 10 on C. 



PRINCIPAL WORK FOR EACH MONTH. 



It is not possible to lay down hard and fast rules as to 

 when certain work should be done, as so much depends 

 upon the locality, and upon the weather. 



In the South of England work of most kmds is more 

 forward than in the North of England or in Scotland. 



The man on the spot should be the best judge as to 

 when planting, feUing, bark peehng, or seed-sowing should 

 be done. 



