Tall oil, a byproduct of the sulfate (Kraft) pulp- 
ing process and a substitute for rosin, especially in 
the manufacture of soaps and in the processing of 
molds for metalworking, is an important recent addi- 
tion to the family of naval stores products. Since 
1944, the national production of tall oil has amount- 
ed to about 10 percent of the weight of rosin pro- 
duced. An important part of this tall-oil production 
comes from the Kraft pulp mills in Florida (22). 
The total annual production of turpentine and 
rosin in the South has remained fairly constant since 
1900. However, the amount produced from crude 
gum has steadily declined. In 1920, more than 90 
percent of the turpentine and rosin produced in the 
United States was derived from crude gum (26). 
In the late thirties the proportion dropped to less 
than 80 percent, and in the 1946-47 season it was 
below 50 percent. In Florida the production of tur- 
pentine from crude gum dropped from 8.3 million 
gallons in 1922 to 3.0 million in 1950 (26, 19). 
This decline in production is reflected in the re- 
duced number of trees being worked for turpentine. 
EACH DOT 
REPRESENTS AN AVERAGE 
OF 100,000 FACES 
cele aes . 
Ficure 10.—Distribution of working naval stores faces, Florida, 1949-50. 
14 Forest Resource Report No. 6, U. S. Department of Agriculture 
