Treesearch

When do lightning storms occur, why do they occur, where do they occur most frequently, where do they start the most fires, is it possible to determine whether or not an approaching storm is liable to start fires, do lightning storms move along definite paths over the national forests?

In Response to strong demand, estimates from the Forest Survey of 1932-1936 are presented in this report on forest acreage and timber volumes by county in the states of the lower South. Although these figures are old and are highly unreliable for individual counties, they are useful as source data in compiling information for groups of counties that differ from the units used in the Forest Survey.

A thorough canvass of the producers of minor timber products in Oregon and Washington has brought together or the first time authoritative statistics as to quantities of each currently produced. This information is valuable in gauging the importance of those industries, the trend in production and consumption, their relation to the major timber industries, and their effect on forest supplies and forest welfare. This issue of FOREST RESEARCH NOTES, therefore, presents a digest of the comprehensive report resulting from the study. Those who are interested in further details than presented...

What to do with the brush after logging? This question has been debated in Wisconsin throughout the entire history of lumbering. In the popular mind, the occurrence of severe forest conflagrations has invariably been associated with the presence of logging slash on the ground. The occurrence of vast forest fires was noted by explorers and fur traders long before logging began on a commercial scale in the Lake States. The greatt historic fires — like the Peshtigo fire which occurred October 9, 1871 in which 1500 lives were lost and 1,280,000 acres were burned over or the Phillips fire of...

According to the records compiled by the supervisors of the national forests in the northern Rocky Mountain region, lightning has been responsible for a greater number of fires, more burned area, more damage, and more expense of suppression in this territory than all other causes of forest fires combined. Smokers, campers, brush burners, incendiarists, lumbering operations, and railroads combined start annually an average of 379 fires on these 23,000,000 acres of Federal forest land, but lightning is credited with an annual average of 824 fires during the 10-year period, 1919 to 1928. In...

An investigation of the growth and yield of western yellow pine has been under way at the Pacific Northwest Forest Experiment Station for the past three years. Some of the results of the study are now available and are presented herewith. The attached alinement charts showing the growth of selectively cut forests are based upon the detailed measurements of 179 plots, involving increment measurements of over 5600 trees in stands which were partially cut 10 to 62 years ago.

In connection with the forest survey of the Douglas fir region, a number of generalized type maps for several counties in Oregon and Washington have been prepared recently for use by the Agricultural Experiment Stations, who will assist in estimating the acreages likely to be withdrawn from forest meals for agricultural use within the next three decades. In the following table the broad type meas of six selected counties are given, showing same interesting conditions and variations.

A recently completed study of the sawmill "waste" in the Douglas fir region of Oregon and Washington shows that in the production of 1929 cute of rough green, rough-sawn lumber (10,286,554,000 board feet), 1,552,865,251 cubic feet (solid measure) of sound wood in sawlog form were used. Of this 66.61 per cent (910,010,322 cu.ft.) was converted into rough-green lumber, 19.31 per cent (261,443,660 cu.ft.) was broken down into slabs, edgings, and trimmings, and 14.08 per cent (130,611,284 cu.ft.) was reduced to sawdust. Aside from this, 167,010,205 cubic feet of bark went through the mill.