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FOEESTRY WORK 



MEASURING TIMBER. 



Quarter Girth. — Square the |- girth, multiply by length 

 and divide by 144= total number of cubic feet in log. 



TriLe Contents. — Square the | girth, multiply by length 

 and divide by 113; or multiply the area by the length and 

 divide by 144. 



To convert I girth measurements to true contents, 

 multiply by 100 and divide by 78-6. 



To convert true contents to | girth, multiply by 78- & 

 and divide by 100. 



TDIBER WEIGHTS. 



British. 



Pounds per 

 Cubic Foot. 



Ash 45-48 



Beech 45-49 



Birch 44-46 



Cedar 31-35 



Elm 37-39 



Hornbeam 47-49 



Larch 35-37 



Oak 50-58 



Pine 40-42 



Bos 55-60 



Foreign. 



Pounds per 

 Cubic Foot, 



Deal 40-44 



MemelFir 37-38 



Mahogany 50-55 



Teak (Indian) 41-42 



Teak (African) 56-60 



American Oak 47-54 



Balled Oak 46-54 



Cubic Fket to 1 Ton of Timbbb. 



The average number of cubic feet to a ton of unconverted timber 

 is as follows: 



Cubic Feet. 



Ash 31 



Beech 27 



Birch 27 



Elm 30 



Cubic ?ieet. 



Oak 24 



Scots Piue 28 



Sycamore 26 



Larch 32 



About 45 per cent, of the total weight of unseasoned timber 

 consists of water. 



