Excerpt from The American Educator, Vol. 4 of 8: Completely Remodelled and Rewritten From Original Text of the New Practical Reference Library, With New Plans and Additional MaterialIt is not necessary to use dressed lumber from the mill for this apparatus, except for the bars. If mill-cut lumber is used, it should be undressed, and if round is used, it should be left with the bark on it, to protect it from the weather. If the timbers, except the bars, are painted, the wood will last for years, but even unpainted cedar is very durable.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.