37 
The heights for the later years given for oak, quality I, in 
Table XVIII, are comparable with those given for oak, 
quality I, in European yield tables, as given by Wimmenauer 
in Forst und Jagdt Zeitung in 1913. What is a quality I hard- 
wood site is also a quality I pine site, but the reverse is not 
necessarily true. 
A study of plants associated with the oak and ash on the 
best sites showed that the following appeared to be the best 
site quality indicators: yellow violet, Viola rotundifolia, jack 
in the pulpit, Arisalura triphyllum, and Trillium erectum. 
These plants were not found on quality II sites. 
Assuming that a forest can be placed under intensive 
management, these tables may serve both as a guide for 
silvicultural treatment and as a statement of yield. 
ASH 
Age Trees Height : 
in per in D.B.H. Basal Area Cubic Ft. per Acre Total Yield 
Years Acre Feet Inches Sq. Feet Saw Logs Cordwood Cu.Ft. Bd. Ft. 
10 8210 18 1.2 65 2a seh 
20 2052 36 2.7 82 7 2131 1231 
30 912 53 4.8 115 be 2650 2650 
40 513 68 6.9 133 eli 4104 4104 
50 328 77 8.8 139 in 4756 4756 
60 228 81 10.6 140 4332 912 5244 25,000 
70 168 82 12.4 141 4036 1344 5380 28,000 
OAK 
Age Trees Height , 
in per in D.B.H. Basal Area | Cubic Ft. per Acre Total Yield 
Years Acre Feet Inches Sq. Feet Saw Logs Cordwood Cu. Ft. Bd. Ft. 
10 7100 16 1.2 56 ae wi any 
20 1540 37 2.7 61 2 924 924 
30 657 57 4.5 73 5 1840 1840 
40 350 68 6.8 88 re 2660 2660 
50 222 75 9.5 109 Si 3760 3760 
60 151 82 12.2 122 3694 906 4600 22,600 
70 108 85 15.0 133 4108 972 5080 27,400 
