DETERMINING THE QUALITY OF STANDING TIMBER 



439 



Table 1. — Yellow Pine. Grades from Sound Grade I Logs 



1 and 2 



In addition, these mill-scale studies give the amount the lumber 

 tally overruns the log scale for logs of different diameters and grades. 

 The average overrun for logs of each diameter class is shown in the 

 tables summarizing the results of the mill-scale studies. When curved 

 for each log grade, overrun tables should have about the following 

 form: 



Table 2. — Yellow Pine. Overrun from Sound Grade I Logs 



One thing more is needed to facilitate the application of this mill- 

 tally data to standing timber. This is a taper table, showing the average 

 top diameters of the various logs in trees of different diameters and 

 heights. This table is preferably based upon diameters breast-high 

 from 12 inches up and upon the number of 16-foot logs. It is planned 

 to prepare such tables for universal use in District 5 from the volume 

 table measurements already taken. A separate table is, of course, re- 

 quired for each species. A portion of a table of this character is given 

 in Table 3 : 



Table 3.— Yellow Pine. Taper Table 



Tree diameter D.i.b. at top end 



breast-high No. 1 2 3 4 5 6 «P" 7 ^'^' 8 9 



Inches Logs Inches Inches Inches Inches Inches Inches Inches Inches Inches 



32 6 25 23 20 18 15 11 



32 7 26 24 22 19 16 13 10 



34 6 28 25 22 19 16 11 



34 7 28 26 24 21 18 14 10 



36 7 30 28 25 22 18 14 10 



38 7 31 28 25 22 18 14 10 



■ 38 8 32 30 28 25 22 18 14 10 



