74 TIIK WlllTK I'INE. 



further up in the same stem, is iiidepiMident of orientation (as great on the north side as on the 

 South siile). is no greater on chiy h\iid tlian f)n the sandy soils, and seems in tliese ])artieuhir8 

 (|uite indei)endent of locality. The wood from the swamp trees is no heavier nor lighter than the 

 wood from the nphmd trees, tlie trees from New I'^ngland iliti'eriug apparently in no way from those 

 of either the Lake region or North Carolina. 



Leaving out of consideration the S])ecilic weight of the limlis and knots (these heing always 

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



Sppcilic 

 itravity. 



Fi vp trees 200 to 250 years old 0. m't 



Five tries 125 to 160 years old ,38S 



Five trees 100 to 125 years <il(l 383 



Ten trees 75 to Oil 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 A\'hite 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 ll'hite Vine. 

 I.— TREES 2110 TO 250 VEAltS OLD. 



Localitv. 



Lincoln Connty, Wifl. . ,. 

 Maratlion '.'(Hinty. Wis. 



GrayliDg, Midi 



Chippewa County, Wis . 



Average. 



Original Approii- 



numberof mate age 



trees. of trees. 



5 

 16 

 3 



3 I 



Yeart. 

 225 

 250 

 205 

 2U9 

 202 

 202 



Diameter 



breast high VTiiltb of 

 without I rings. 

 bark. 



Inchet. 

 23.0 

 22. 

 19.0 

 27.0 

 19.4 

 20.5 



Specific gravity X 100. Moisture as 



per cent 



of the 

 Green. weight of 

 dry wood. 



Kiln dry. 



1.1 

 .8 

 1.3 

 1.6 

 1.0 

 1.2 



36.1 

 38.5 

 36.0 

 39.0 

 38.5 

 39.2 



Shrinkage 

 in volume. 



38.0 



Per cent. 

 93 

 73 

 95 

 85 

 100 

 81 



II.— TREES 125 TO 160 TEARS OLD. 



Per cent. 

 7.6 

 8.6 



8.5 

 8.1 

 8.0 

 7.9 



8.1 



Lincoln County, "Wis . 



Do 



Do 



Do 



Linvitlc.N.C 



4 



458 



146 

 140 

 141 

 140 



158 



19.0 

 22.0 

 12.0 

 15.0 

 33.0 



Average. 



38.8 



74 



72 1 

 65 I 

 72 



III.— TREES 100 TO 122 TEARS OLD. 



Grayling, Mich . 

 1)0 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Average. 



110 

 122 

 114 

 105 

 115 

 108 

 112 

 111 



17.5 

 17.7 

 9.5 

 7.5 

 7.8 

 7.8 

 7.8 

 5.0 



64 

 64 

 79 

 76 

 100 

 78 

 85 

 71 



38.3 



74 



99 

 120 

 121 

 138 

 122 

 147 

 109 



119 



0.2 

 9.0 

 0.8 

 8.5 

 10.5 

 8.8 

 8 8 

 8.5 



8.9 



IV.-TREES 75 TO 100 TEARS OLD. 



Lincoln Connty, Wis ... 

 Marathon Couutv, Wis . 



Do ". 



Do 



Do 



Grayling. Mich 



Chiiijiewa County, Wis . 



IK) 



Do 



Do 



Average . 



4.0 

 14.0 

 12.0 

 15.0 

 10.0 

 7.0 

 7.0 

 6.3 

 10.4 

 10.2 



112 



9.0 



