Originally published in 1916. FOREWORD: Wood properly preserved is practical permanent wood, and because efficient avoids the cost of unnecessary replacements. The treatment of timber to make it last the limit of its serviceability is a fundamental feature of modern engineering. Briefly, in the following pages, the American Wood-Preservers' Association presents facts and figures for those becoming interested in the subject. This early works is a comprehensive and informative look at the subject with much of the information still useful and practical today. Many of the earliest books, particularly those dating back to the 1900's and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.