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Excerpt from Bias and Precision of the Barr and Stroud Dendrometer Under Field Conditions Direct measurements of tree volume are usually obtained by measuring felled trees. Many foresters are reluctant to fell trees that may not be utilized, especially valuable species or crop trees under rotation age (winters In addition to the loss of volume and growing stock, leaving felled trees provides breeding places for certain insects and increases fire hazard in the forest. Also, trees measured may not be the property of the party or agency conducting the survey. In other cases, such trees might be located on permanent sample plots that cannot be destroyed. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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