INDUSTRIAL AND SCIENTIFIC ASPECTS OF THE 
PINE AND ITS PRODUCTS.* 
BY CHAS. H. HERTY, PH.D. 
Consideration of the annual production of volatile oils shows 
at once the great preponderance of spirits of turpentine over 
all others combined. Each quart of spirits of turpentine rep- 
resents approximately one year’s output of this product from 
one tree. At least nine-tenths of the world’s supply of this 
substance comes from our Southern States, for the production 
of which not less than one hundred and twenty millions of 
trees are annually subjected to turpentining. Two millions 
of acres of virgin timber are annually brought into operation 
to supply the place of exhausted timber. Millions of pines 
which have never been turpentined are felled each year by the 
mills in Mississippi, Louisiana and Texas. Every winter the 
entire turpentine producing section is swept by ground fires 
which destroy most of the seedlings, and thus make impos- 
sible reproduction on any large scale. The annual revenue 
from the naval stores industry can be conservately estimated 
under present prices at not less than forty millions of dollars. 
Surely such a situation justifies and demands systematic 
experimental work in the hope of conserving this valuable 
native resource. 
EFFECT OF TURPENTINING ON LUMBER. 
The pine has a two-fold commercial value, first, as timber, 
second, as a producer of the oleo-resin, “crude turpentine.” 
♦Reprinted from The Chemical Engineer, March, 1907. 
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