Treesearch

This release presents advanc3 ·information on the amount of longleaf pine stumpviOod in four Forest Survey Units. The wood referred to is that in the seasoned stumps resulting from the cutting of the longleaf pine of the original forest. These stumps, together with other highly rosinimpregnated wood in the tops and limbs of fallen old-growth longleaf pine, are used in the manufacture of wood turpentine, wood rosin, rosin oils, charcoal and other products.

A study of forest growth in western Oregon and western Washington, the so-called Douglas fir region, was made in 1934-35 by the Pacific Northwest Forest Experiment Station. This is one phase of the Nation-wide forest survey undertaken by the Department of Agriculture under authority of the McSweeney-McNary Forest Research Act. Other phases of the survey are an inventory of forest-land areas and timber volumes, a study of forest depletion through cutting and through loss by fire, insect attack, and disease, and a study of present and prospective wood requirements. Material previously...

Detection of forest fires while they are still small is so important in forest protection that studies of the visibility of forest fire smokes from lookout points has been one of the principal phases of the fire studies program of the Pacific Northwest Forest Experiment Station. One phase of fire detection is the personal efficiency of the lookout. The Station has studied methods of testing the eyesight of lookouts and the effectiveness of colored and smoked glasses in lessening eyestrain. The study of glasses, made by Richard McArdle, E. J. Workman, and George M. Byram, led to selection...

Whenever the Tillamook burn and its problems are considered, there is need for accurate information on the location of the area, acreage burned, and the volume of timber killed. The data used by one agency are liable to be inconsistent with those used by another if a convenient source of accurate data is not available to all. In order to meet this need the best existing information has been compiled and is being circulated through this publication to interested agencies with the suggestion that these data be used in the future wherever applicable.

The mapping of a fuel is simply the identification of the place where a specific kind of fire behavior and difficulty, or expense, of control are expected. The article presents, in abbreviated form, instructions issued to fuel mappers in northern Idaho and western Montana. Under this method, which was developed incidental to fire control and transportation planning, fifteen million acres of national forest fuels have been mapped to date.