138 



JOURNAL OF Forestry 



elm, yellow poplar, red oak, catalpa, white ash, white oak, black walnut, 

 Russian mulberry, basswood, osage orange, chestnut, and hickory. 

 However, a large part of the differences in growth is undoubtedly due 

 to soil variations rather than to inherent differences of the species 

 themselves. In determining the above order, the growth made by the 

 best stand of each species was used. Red oak furnishes an illustration 

 of the variability in soils. Several stands of this species of nearly 

 the same age are located on various parts of the area. In these stands, 

 the average annual height growth for the whole life of each one ranges 

 from 0.43 of a foot to 0.92. 



The details of the growth made by each stand up to the time of the 

 last measurement (complete measurements are made at five-year inter- 

 vals) are shown in the following table: 



Species 



Scotch pine 



Scotch pine 



White pine 



White pine 



Austrian pine 



Doug-las fir 



W. yellow pine 



W. yellow pine-. . . 

 Norwaj' spruce . . . 



Cottonwood 



Sugar maple 



Sug-ar maple 



Box elder 



Box elder 



White elm 



Yellow poplar 



Red oak 



Red oak 



Red oak 



Red oak 



Red oak 



Red oak 



Red oak 



Red oak 



Red oak 



Catalpa 



I atalpa 



Catalpa 



White ash 



White ash 



White ash 



White oak 



White oak 



White oak 



Black walnut 



Black walnut 



Black walnut 



Russian mulberry 



Basswood 



Osag-e orang:e 



Chestnut 



Hickory 



3.377 

 1,945 

 2,244 

 1.138 

 825 



3,188 

 207 

 2.750 

 1.555 

 1.081 

 2.203 



928 

 1.026 

 1,019 

 308 

 573 

 680 

 522 



2.780 



2.218 



1,200 



2.500 



1.100 



1,717 



839 



671 



606 



2,085 



550 



1.887 



1,701 



2.205 



128 



120 



4x4 



rreg-. 



3x3 



4x4 

 4x4 

 6x6 



irreg-. 

 3x3 



10x10 

 4x4 

 5x5 

 6x6 

 4x4 

 5x5 

 4x4 

 4x4 

 5x5 

 6x6 

 5.x5 

 5x5 

 6x6 

 6x6 

 6x6 

 6x6 

 4x4 

 4x4 

 4x4 

 6x6 

 4x4 

 6x6 

 4x4 

 5x5 

 5x5 

 5x5 

 5x5 

 2x4 

 4x4 

 4x4 

 4x4 

 6x6 

 4x4 



3.6 

 2.5 

 2.7 

 3.3 

 2.9 

 1.3 

 1.3 

 1.6 



25.7 

 21.1 

 20.8 

 21.8 

 17.9 

 11.1 

 7.6 

 10.9 

 6.5 

 9.7 

 14.0 

 13.9 

 11.4 

 13.2 

 12.8 

 15.0 

 8.4 

 6.6 

 5.2 

 8.6 

 9.1 

 8.6 

 8.1 

 7.1 

 11.1 

 11.7 

 I1.6 

 10.5 

 7.1 

 11.7 

 11.4 

 8.1 

 4.8 

 3.7 

 6.1 

 5.8 

 4.7 

 7.8 

 7.2 

 6.3 

 4.9 

 2.6 



s . 



^U3 O 



S 



a J 



41.5 

 33.0 

 30.3 

 33.8 

 24.7 

 17.2 

 13.9 

 18.7 

 21.1 

 15.2 

 21.8 

 20.6 

 22.0 

 26.8 

 24.0 

 22.4 

 17.9 

 16.7 

 13.7 

 15.4 

 19.6 

 16.2 

 17.2 

 16.4 

 17.6 

 31.1 

 18.6 

 22.5 

 15.9 

 19.0 

 22.3 

 15.5 



9.4 

 11.2 

 10.1 

 11.9 



8.1 

 17.7 

 16.3 

 20.3 



9.3 



6.0 



127. 



141.3 



118.7 



104.9 

 9.321 

 8.258 



.621 

 25.98 

 17.04 

 0.55 

 18.66 



12.10 

 3.96 



3.822 

 6.170 

 9.31 

 3.712 

 2.261 

 2.456 

 24.16 

 30.58 

 31.096 



0. 

 ' ' ^545 



Averagre 

 annual g-rowth 



D.b. h., Heig-ht. 

 nches feet 



0.21 

 0.18 

 0.16 

 0.19 

 0.20 

 0.09 

 0.12 

 0.11 



0.16 

 0.11 

 0.11 

 0.10 

 0.10 

 0.12 

 0.11 

 0.057 



0.066 

 0.075 

 0.06 

 0.06 

 0.05 

 0.075 

 0.11 

 0.11 

 0.09 



5.920, 0.06 



1.51 



1.51 



1.22 



1.28 



1.28 



0.79» 



0.69 



0.78 



0.43 



1.94 



1.16 



1.16 



0.95 



1.10 



1.07 



1.070 



0.60 



0.55 



0.43 



0.71= 



0.76<^ 



0.71« 



0.62, 



0.55' 



0.92 



0.838 



0.89 



0.70 



0.59 



0.83 • 



0.87 



0.62 



0.44 



0.26 



0.55 



0.41!' 



0.60' 



0.60 



0.55 



0.42 



0.35 



0.26 



a Now mixed with P. ponderosa. b Mixed with white pine, 

 spot in spring-, e Seed spot in spring, f Seed spot in spring. 

 h Seed spot in fall, i Seed spot in spring. 



c Seed spot in fall, d Seed 

 g Mixed with Scotch pine. 



