JACK PINE. 37 
TasLE 21.—Taper of jack pine trees of different diameters and heights, showing diameter 
inside bark at different heights above the ground. 
[Based on measurements by H. H. Chapman in Hubbard County, and a few by J. St. J. Benedict in 
Cass County, Minn., of trees cut in dense, even-aged stands. Measurements taken on jack pine in 
Roscommon County, Mich., indicated the same taper as given in this table for trees of different diameters 
and heights.] 
20-FOOT TREES. 
Height above ground (feet). 
Diam- 
eter | . 
Hraase il 2 | 3 4.5 9.15 | Ios | 25.45 33.6 | Basis. 
high. 
Diameter inside bark (inches). 
Inches. ; Trees. 
2.0 1.9 1.8 1.8 1.4 (OR Bessie ee en bee a 9 
3 ait 2.9 2.8 PEt DR 8} STA Vesee arse et ret Fes A YD alas 4 
4 4.1 3.9 3.8 3.6 3.1 0 BAe) BY es cae ae re eS he 
5 Onl 4.9 4.7 4.6 3.9 721) Len iaieaerie EAs UE hee ee 1 
6 6.1 5.9 5.7 ae) 4.7 STAN Serene per tenoN ACe E 
7 ee, 6.9 6.6 6.4 Da DU ial aes yall eaten OD eS AaL 
8 8.2 7.8 7.6 7.3 6.3 DERE eee dey Nees | netes iced cul | xp aka, een 
14 
30-FOOT TREES. 
2 2.0 1.9 1.8 1.8 1.6 2 (eto lesrase mats 6 
3 3.1 2.9 2.8 PU 2.4 Led, Slo aerseeee 22 
4 4.1 3.9 3.8 -3.6 B37 252 OR Hears eee 17 
5 Seal! 4.9 4.7 4.6 4.0 2.8 1 PS) Us be ate 7 
6 6.1 5.9 5.7 5 @) 4.8 3.3 HUA el Fes cues ane 8 
7 Uo? 6.9 6.6 6.4 5.6 3.9 Aa SAB BAe ae 5 
8 8.2 7.8 7.6 7.3 6.4 4.4 a RET We Fa aT 
9 9.2 8.8 8.5 8.2 Wee 5x0 1 UBS Ne chee oe fees Aaah 
10 10.2 9.8 9.5 9.1 8.0 Sa5 Oo BMA ee See ee || Sel ar 
65 
40-FOOT TREES. 
2 2.0 1.9 1.8 1.8 1.7 U7 ike ONZE Sees 
3} aot 2.9 2.8 NG; 225 2.2 WE 7 8 2 
4 4.1 3.9 3.8 3.6 GRO 2.8 2.1 1.0 41 
5 5.1 4.9 4.7 4.6 4.2 3.4 225 1.2 | 31 
6 6.1 5.9 aft 5.5 5.0 4.1 2.9 1.4 25 
7 Wee, 6.9 6.6 6.4 5.8 4.7 3.3 1.6 24 
8 8.2 7.8 7.6 Woo! 6.6 Sad Bu 1S? 21 
9 9.2 8.8 8.5 8.2 ad: 5.9 4.1 1.9 14 
10 10.2 9.8 9.5 9.1 8.2 6.5 4.5 Poe At 6 
11 11.2 10.8 10.4 10.1 9.0 7.1 4.9 252, 3 
12 L252 Wey 11.4 11.0 9.8 Tet 5.3 2.4 1 
13 1352 1) 7 12.3 11.9 10.6 8.3 NG 1 PAA IYO) een tes 
14 14.2 13.6 16574 12.8 ES 8.9 6.1 Ds dee Recreate 
| 168 
