Tables and Rules 



337 



VOLUME TABLE FOB CHESTNUT 



(Graves' Mensuration) 



Dominant trees about 50 years old. 



(Based on 99 trees measured in Milford Pa.) 



TABLE SHOWING RANGE OF DURABILITY OF FENCE 

 POSTS IN MINNESOTA. (AIR-DRY) 



(From "Forestry in Minnesota," by Green) 



Red Cedar 30 years 



White Cedar (quartered 6-inch face) ... . 10-15 years 



White Oak (6-inch round) 8 years 



Red and Black Oak 4 years 



Tamarack (Redwood) 9 years 



Elm 6-7 years 



Ash, Beech, Maple 4 years 



Black Walnut : . . . . 7-10 years 



White Willow (6" in diameter, peeled and dried) . 6-7 years 

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