000 acres. As in the case of longleaf pine type on 
dry sites, the perpetuation of pine on many of these 
low, moist areas fringing the river bottoms is going 
to require the elimination of the understory of hard- 
woods during the period of stand regeneration. On 
the best of the sites, growing high-quality hardwoods, 
or a mixture of pine and hardwoods, rather than 
pure stands of pine, may prove to be the most prof- 
itable course to follow. 
Large Number of Worked-Out Trees 
In the 15 years since the first survey, commendable 
progress has been made in utilizing the 20 million 
worked-out naval stores trees that clogged the pine 
stands in the mid-thirties. The pulp industry, by cre- 
ating a new market for millions of cords of wood 
that could be cut from worked-out timber, has been 
a significant factor in bringing this about. 
34 ; Forest Resource Report No. 6, U. S. Department of Agriculture 
By 1949, despite annual additions as naval stores — 
crops were worked out, the total number of worked- 
out trees had been reduced to 7.8 million. Nearly 2 
million of these were in Northwest Florida and about 
700,000 were in the central part of the State. All 
together, they amounted to less than 4 percent of 
the total number of turpentine pines of saw-timber 
size and their presence does not materially reduce 
timber yields in these two areas. 
In Northeast Florida there are about 5.2 million 
worked-out trees. Here, 6 percent of all longleaf and 
slash pine trees of saw-timber size are worked out, 
plus nearly a half million 7- and 8-inch trees. Cubic- 
foot growth on these trees is about a third less than 
on round trees, and mortality losses are high. They 
should be cut as promptly as possible, unless they are 
needed for seed, in order to make way for new 
growth. 
