Trees Worth Knowing

by Julia Ellen Rogers

The trees are tall, often exceeding one hundred feet in height; with trunks slender in proportion, rarely reaching three feet in diameter. The narrow, irregular head is formed of short stout twisted limbs on the upper third of the trunk. The leaves are from twelve to eighteen inches long, forming dense tufts at the ends of the branches. Being flexible they droop and sway on the ends of erect branches like shining fountains, their emerald lightened by the silvery sheaths that invest each group of three.

Sapling longleaf pines have recently entered the market for Christmas greens in Northern cities. This threatens the renewal of longleaf forests that have fallen to the axe of the lumberman. Unless Federal restriction comes to the rescue, there is little hope of saving this young growth, for nothing can exceed in beauty a three-foot sapling of longleaf pine as a Christmas decoration.

The lumber of this species is the "Southern pine" of the builder. Heavy, strong, yellowish brown, durable, it has a tremendous vogue for flooring and the interior finish of buildings. It is used in the construction of railway cars. Its durability in contact with water accounts for its use in bridge-building, and for masts and spars of vessels. A great deal of this lumber is exported for use in European shipyards. It has replaced the dwindling supply of white pine for building purposes throughout the North, and the strong demand for it has been followed by lumbering of the most destructive and wasteful type, because the forests are owned privately.

In the early days the American colonists in Virginia tapped the longleaf pine, collected the resin from the bleeding wounds, and boiled it down for pitch and tar. These crude beginnings established an industry now known as the "orcharding" of the longleaf pine. After a century of wastefulness and wanton destruction of the trees, it has become patent to all that scientific methods must be resorted to in the production of turpentine and other products derived from the living trees. Otherwise the dwindling industry will soon come to an end.

Resin is the sap of the tree. The first problem is to draw it in a manner least wasteful of the product, and least dangerous to the life of the tree. The second process is the melting of the collected resin in a still and the drawing off of the volatile turpentine. What is left solidifies and is known as rosin.

"Boxing" the trees was the cutting of a grooved incision low on the trunk, with a hollow at the base of the vertical trough to hold the discharge of the bleeding sap-wood. Resin-gatherers visited the tapped trees and emptied the pockets into buckets by means of a ladle. They also scraped away the hardened sap and widened the wounds to induce the flow from new tissues. This method cost the life of the tree in two or three years, and it became a prey to disease and a menace to the whole forest, as fuel for fires accidentally started. Nowadays, all reasonable owners of longleaf pine have discarded the old-fashioned boxing and installed methods approved by the Department of Forestry.

Tar was formerly derived from the slow burning of wood in a clay-lined pit. The branches, roots and other lumber refuse, cut in small sizes were heaped in a compact mound and covered with sods and earth. Smoldering fires soon induced a flow of smoky tar, thick as molasses, in the bottom of the pit. In due time the flow ceased, the fires went out, and charcoal was the result of this slow burning. Removing the charcoal, the tar became available for various purposes; boiled until it lost its liquid character, it became tough sticky pitch. This primitive pit method of extracting tar and making charcoal has been abandoned wherever intelligence governs the industry, and distillation processes have been installed.

The Shortleaf Pine

P. echinata, Mill.

The shortleaf pine ranks second to the longleaf in importance to the lumber industries of the East and South. It ranges from Staten Island, New York, to north Florida, and west through West Virginia, eastern Tennessee, southern Missouri, Louisiana and eastern Texas. It reaches its largest size and greatest abundance west of the Mississippi River, where great forests, practically untouched thirty years ago, have become the centre of the "yellow pine" industry, out of which vast fortunes have been made. The wood is preferred by builders, because it is less rich in resin, softer and therefore more easily worked. Young trees yield turpentine and pitch, and with the longleaf and the Cuban pine much forest growth has suffered destruction in the production of these commodities.