74 



THE WHITK PINE. 



farther up in the same stem, is independent of orientation (as great on the north side as on the 

 south side), is no greater on clay land than on the sandy soils, and seems in these particulars 

 quite independent of locality. The wood from the swamp trees is no heavier nor lighter than the 

 wood from the upland trees, the trees from New England differing apparently in no way from those 

 of either the Lake region or North Carolina. 



leaving out of consideration the specific weight of the limbs and knots (these being always 

 heavy, as in all pines), the average specific weight of the dry wood of the stem was found to be for 



gravity. 

 Five trees 200 to 250 years old ........................................................... 0.386 



Five trees 125 to 160 years old ........................................................... ;388 



Five trees 100 to 125 years old ............................................................ 383 



Ten trees 75 to 99 years old ............................................................... 378 



Ten trees 50 to 74 years old ............................................................... 366 



Nineteen trees 40 to 49 years old ......................................................... 353 



Nineteen trees 30 to 39 years old ......................................................... 351 



From the above, and still more from the table following, in which the trees are grouped 

 according to age, it will be seen that White Pine displays a uniformity of specific weight, and other 

 properties dependent on weight, such as is entirely unknown in any other pine of the Eastern 

 United States. 



Average weight (kiln dry and green), moisture content, and shrinkage per cent of White Pine. 

 I. TREES 200 TO 250 YEARS OLD. 



