Treesearch

The best test of the practicability of any new method or device is the actual trial by numerous users who are interested only in the end product, and who have no special interest in the means employed to reach that end. Such users are not inclined to give the new method the advantage of any doubts, and they are particularly critical of the method or device insofar as it may make more work for them. If, after such a trial, these users extend the use of the new method, of their own volition, or better yet if they do this at some expense to themselves, the verdict is most conclusive.

Data from 317 oaks and yellow poplars wounded by a spring fire in Virginia were analyzed by means of multiple linear correlation. A method was obtained whereby the size of wound can be predicted provided the areas of discolored bark and diameters of injured trees are known. The method of prediction so far is safely applicable only to groups of trees similar to those studied. Of the species examined, yellow poplar was most resistant to basal damage, scarlet oak was the most susceptible, and black, white and chestnut oak were intermediate.

On the post office directory at Asheville, North Carolina, along with the names, Organized Reserves, Prohibition Investigators, Geologic Survey, Pisgah National Forest and others, you will find the words, Appalachian Forest Experiment Station -- Room 223.

A general survey of forest land ownership in western Washington and Oregon and an intensive study of parts of eleven sample counties therein reveal a condition that should command broad serious attention.

The purpose of this report is to make immediately available to the Timber Conservation Board information dealing with the extent of present forest areas, timber supplies, current and potential timber growth, forest depletion, and timber requirements in the United States, obtained by an investigation initiated by the Forest Service about one and a half years ago. The most recent report embodying similar information in considerable detail is ""Timber Depletion, Lumber Prices, Lumber Exports, and Concentration of Timber Ownership,"" prepared by the Forest Service in 1920 as a result of Senate...

During the last decade the U. S. Forest Service and several of the forest schools have completed rather comprehensive studies of the growth and yield of a number of commercially important native conifers. As the majority of these studies show the volumes obtainable in fully-stocked stands to very similar standards of utilization, they furnish an excellent opportunity to compare the relative rates of growth on a number of important tree species. This is always an interesting subject to many foresters, as indicated by the Woodward-Forbes controversy of some months ago, and consequently the...

For some years forest investigators in the Pacific Northwest have been aware of the considerable quantity of tree seed which accumulates in the duff of heavy virgin timber stands and apparently retains its vitality for a few years in a sort of natural cold-storage condition. The major portion of the luxuriant regeneration which frequently follows logging and forest fires in the western white pine forest of northern Idaho has, in fact, been attributed by many foresters to this stored seed. The theory is that wholesale germination is stimulated by removal of the dense overwood shade and...

Measurements of meteorological conditions prevailing during the rapid spread of forest fires are greatly needed so that when their recurrence seems probable, fire-weather forecasters may issue warnings of the danger. Such determinations also can be used by forest protective agencies which operate meteorological stations to guide their own action in the distribution of men and the hiring of fire fighters whenever their instruments reveal the early probability or actual existence of these dangerous conditions.

The western white pine type is the most important forest unit over large areas of rough uplands in northern Idaho and adjacent portions of eastern Washington and western Montana. It occupies throughout this region the cooler, moister sites between elevations of 2,000 and 5,500 feet, reaching its best development in northern Idaho between the international boundary and the Lochsa River (10). The type is distinguished by its luxuriant growth and great complexity and characterized by the presence of western white pine (Pinus montícola D. Don) in association with a large number of other...