OCCUPATIONAL DERMATITIS FROM WOOD TURPENTINE

The best grade of turpentine is obtained by tapping the living pine trees collecting the resins that exude, and refining them. The turpentine so derived is "gum spirits of turpentine." This method is wasteful of timber, and its use is rapidly diminishing. Lumbering operations afford every year a vast lot of waste wood. Attempts are being made to produce a high grade of turpentine from these rejected woods and uprooted ancient stumps through steam distillation and destructive distillation methods. The Naval Stores Act of 1924, recognizes these grades of turpentine: "Gum spirits of turpentine," which means spirits of turpentine made from gum (oleoresin) from a living tree. "Steam distilled wood turpentine," which is wood turpentine distilled with steam from the oleoresin within or extracted from the wood. "Destructively distilled wood turpentine," wood turpentine obtained in the destructive distillation of the wood. "Wood turpentine," which includes steam distilled wood turpentine and