52 WORKING PLAN, FOREST LANDS IN SOUTH CAROLINA. 
therefore, not upon calculations of future yield, but entirely upon 
silvicultural and market considerations. 
The abnormal condition of the forest renders impracticable accu- 
rate estimates of its production, even in the immediate future. Boxed 
trees can not properly be used as a basis for predictions of future 
yield, because it is probable that they will soon fall as a result of 
damage from wind, fire, or disease, while the prevalence of fires during 
a long period has rendered the representation of small trees very 
irregular. The first object to be gained is, through protection from 
fire and through careful cutting to utilize fully the productive capa- 
city of the natural pine lands. Only after these have been restored to 
something like their normal condition will it be possible to make pre- 
dictions of any degree of accuracy concerning the return which they 
can be expected to make in the long run, or to prepare a working plan 
based on annual production or recurrent periods of equal yields. 
The forests of Loblolly Pine, owing to the fact that they have not 
been culled nor the trees boxed, more nearly approach a normal con- 
dition than the forests in which Longleaf and Cuban Pine predominate. 
An estimate is therefore given of the yield which may be looked for 
on those parts of the area included in the valuation surveys on which 
this tree makes its largest showing, as the growth now in sight 
matures. 
The following table shows for Loblolly Pine in Blocks 2 and 5 the 
present yield per acre, the future yield per acre at ten-year periods, 
and the number of years which must elapse between equal cuts, cutting 
to breasthigh diameter limits of 12, 14, and 16 inches: 
TaBLE 20.—Future yield of Loblolly Pine on Blocks 2 and 5. 

Cutting | | Average yield per acre obtainable at the end of 10-year \ Tatervel 




Number | himit; di- SENUID: | periods. required 
of ameter | Dace | oa | between 
block. ae '" acre. | 10 years. | 20years. | 30 years. | 40 years. | 50 years. | ee 
| | 
Inches. |Board feet.; Board feet. | Board feet. | Board feet. | Board feet. | Board feet. Years. 
12) | 1,062-94 83. 40 | 260. 50 453. 92 633. 72 799. 21 68 
Dnt ci ei ae 14 | 1,023.64 99, 92 | 285. 42 507. 42 | 792.79 978. 84 52 
| 16 | - 961.32 103.57 | 981.77 655. 22 | 946.06 | 1,194.70 40 
12 | 6,198.76 425. 40 978. 78 1,750.18 | 2,864.18 3, 721.38 85 
yeu aoe 14 | 5,956.06 600. 20 1,377.98 2,432.38 ; 3,835.83 4,817.15 62 
| 16 | 5,545.18 588. 28 1, 695. 49 3, 036. 46 4,081.01 6, 042.03 47 







MARKET AND TRANSPORTATION. 
The mills on the tract have not been equipped to utilize sap logs 
profitably, and the waste of merchantable timber of this description 
has been enormous. Owing to the fact that a large part of the dimen- 
sion timber has been culled from the forest, much of the remaining 
pine will cut into sap logs. Such material can be most profitably 





