LONGLEAF PIXE. 19 



be observed in any well-stocked stand in which are found dominant 

 trees, others that are barely living-, and still others that have died 

 for lack of overhead light, soil moisture, or root space. If these 

 trees are cut and utilized, the total yield of the stand is considerably 

 increased, and the stand is made more profitable. 



The following facts concerning a few of the stands actually meas- 

 ured (see Table 10) will serve as illustrations of what may be 

 expected in the way of yields from well-stocked longleaf stands, 

 commonly considered locally as " dense " stands : 



1. A 23-year-old stand, consisting of 210 trees per acre averaging 

 8.1 inches in diameter and 76 feet in height, contained 23 cords of 

 wood (with the bark) or 17 cords of peeled wood. If all trees measur- 

 ing 10 inches and over in diameter were cut, the stand would saw 

 out about 2.850 board feet; or if all trees 8 inches and over were 

 cut. it would produce 4,984 feet. By the Doyle log rule, however, 

 all trees measuring 7 inches and over in diameter scaled only 1,430, 

 or less than one-third of what might actually be sawed. 2 



2. A 25-year-old stand, with 560 trees per acre averaging 29 feet 

 in height and 4.2 inches in diameter, contained 10 cords of wood with 

 the bark on or 7 cords of peeled wood. The stand had no trees as 

 large as 10 inches in diameter, but contained about 700 board feet 

 of timber in trees 8 inches and over in diameter. If the logs in the 

 trees measuring 7 inches and over were scaled by the Doyle rule, 

 there would be only 160 board feet per acre. 



3. A 25-year-old stand, containing 279 trees which averaged 54 

 feet in height and 7.6 inches in diameter, contained 30 cords with 

 bark, or 23 cords of peeled wood. It amounted to 3,579 feet, if it 

 was closely sawed, and if all trees 10 inches and over were used; 

 or 6,980 feet if all the trees down to and including those 8 inches in 

 diameter were taken. If scaled by the Doyle rule, the stand had 

 2,157 feet. 



4. A 50-year-old stand, which consisted of 304 dominant trees av- 

 eraging 63 feet in height and 9.2 inches in diameter, contained 55 

 cords of wood with bark, or 42 cords Avithout bark. It had 8,565 

 board feet if closely utilized down to and including 10-inch trees, or 

 14.450 feet if the trees 8 inches in diameter and larger were used. 

 The Doyle rule gave 2,128 board feet. 



5. A 70-year-old stand — an average of two stands of the same age 

 (]']. I) — consisted of 265 trees per acre which averaged 68 feet in 

 height and 11. 2 inches in diameter, and contained 58 cords of wood 

 with bark or 46 cords without bark. If scaled by the Doyle rule, all 

 trees 7 inches and up showed 9.600 board feet. If cut closely and 

 actually scaled or measured at the mill, all trees 10 inches and up 

 contained about 1.8,000 board feet, or all trees 8 inches and up (there. 



re only :i few of this chiss) contained L9,400 board feet. 



If the above-described stands are examined, and if reference is 

 made to Tables 1,4, and 9, ii will be noted, for example, thai the 23 

 year-old stand (1) consisted of relatively lew trees per acre, but that 

 these averaged large both in diameter and in height. Also, ;is com 



• • Doyle rule, small-sized timber usually scales only one-third to two-third 

 amounl thai can actually i"- cul by careful awing and close utilization In the lo 



