14. WORKING PLAN, FOREST LANDS IN SOUTH CAROLINA? 
that the groups be opened up by the removal of the mature trees 
and that the whole block be protected from fire. 
Block 3. Cut-over pine land.—This block has all been lame | 
recently, and the cutting was comparatively close. The large per- 
centage of Cypress and Gums—34.5 per cent of all trees 12 inches and 
over in diameter—is explained by the cutting out of most of the large 
pines. There is a fair stand of small unboxed pine, which it should 
be the first object of the management to protect from fire. 
Block 4. Swamp land.—This table, unlike the other tables of stand, , 
is based upon acre measurements einen were made entirely en 
one forest type, which is fairly typical of the mature swamp forest 
on this tract. Sweet and Black Gum and Cypress together comprise 
94 per cent of the trees 12 inches and over in diameter. Although 
the Gums greatly outnumber all other species, the commercial impor- 
tance of the forest in this block lies at present entirely in the large 
number of merchantable Cypress. 
The swamp forest is exceedingly dense, as is indicated by the large 
number of trees per acre 12 inches and over in diameter, and the 
crowns of the trees admit very little light. 
The effect of lumbering the merchantable Cypress would be bene- 
ficial to the forest by breaking the dense cover of the crowns and 
allowing light to reach the undergrowth. The cutting of mature | 
hardwoods would be much more effective, owing to their greater num- 
ber; but lumbering of hardwoods is at present impracticable. 
Block 5. Loblolly Pine land.—The forest in which were made the acre 
measurements upon which this table of stand is based consists largely 
of pure Loblolly Pine and Loblolly Pine in mixture with oaks. The 
small stand of Cuban Pine occurs in small groups or scattered by 
single trees throughout the block. This block includes also small 
areas of swamp and Longleaf Pine land. Many years ago the largest 
Cuban and Longleaf Pines were cut out. 
The table shows that there are 8.90 Loblolly Pines per acre from 1 
to 9 inches in diameter, while there are 11.30 Loblolly Pines from 10 
to 18 inches in diameter. The proportionate representation of diam- 
eter classes is the reverse of what it should be if the proportion of 
Loblolly Pine in the mixture is not to suffer by the removal of the | 
large trees. This scarcity of young growth of Loblolly Pine is due to 

the dense cover which the crowns of the large trees afford, and to the | 
annual fires, which destroy great numbers of small Loblolly Pines. 
The management indicated for this block is the opening up of the | 
forest by the removal of the larger trees and the protection of young | 
growth for a time sufficient for a new forest to become established. 


