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Excerpt from Test of Methods of Protecting Woods Against Termites or White Ants: A Progress Report The most effective preservative in protecting timber to be set in the ground from attack by termites is coal tar creosote. The length of service required must determine whether the method is to be a superficial treatment or a more costly but permanent impregnation. Impregnation by the open-tank method with coal-tar creosote renders wood resistant to attack by termites for at least 15 years. Impregnation by the full - cell process with coal-tar creosote renders wood resistant for at least 25 years. This method is recommended for wood to be exported for use In tropical countries. 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.