_National Forest Utilization Experiments._ The work of the proper utilization of the products of the National Forests is under the supervision of the District Forester and the Assistant District Forester in charge of Forest Products in the districts. Only three out of the seven districts have such an organization. These men have charge of all problems connected with the use and marketing of National Forest timber, the construction of improvements on the Forests, and related administrative questions. The following problems are included: studies of existing industries, covering methods and costs of manufacture, grades, and other specifications of manufactured products and the prices obtained for such products; the collection of market prices, mill scale studies to determine grades and overrun, and investigations in kiln drying; waste in existing industries and closer utilization possible through improved methods; new uses for National Forest species through wood preservation; introduction of industries which will result in closer or more profitable utilization, as the manufacture of pulp and paper, wood distillation, turpentining, and the manufacture of secondary wood products; overcoming prejudices against particular species or classes of material; general questions of timber supply and demand, markets and freight rates; advice and assistance in the construction of National Forest improvements, particularly in the use of wood preservatives; advice and assistance to persons on any matter connected with the utilization of National Forest timber; the preparation of publications upon subjects covered by investigations which have practical or scientific value; and demonstrations of methods or processes developed by the Forest Service for the benefit of local communities. The presence on a Forest of large quantities of unmarketable timber, or dead timber, or of material not used in current sales would mean an investigation of methods for its utilization. Local problems affecting wood-using industries in manufacturing or marketing timber, such as sap stain in lumber, difficulties in seasoning lumber, and the effect of different silvicultural methods upon the average grades of lumber manufactured, are also taken up with the Products experts at the District Office. Also in the construction of National Forest improvements the Forest Supervisor may need assistance in applying wood preservatives to telephone poles, fence posts, and other material. Sometimes timber treating plants are erected, if necessary, to treat not only material used on the National Forests, but also material used by local residents near a Forest.