Clarence John Humphrey presents a comprehensive analysis of the toxicity of various oils and salts, with a particular focus on those used in wood preservation. Drawing on the latest scientific research, this book provides a thorough overview of the different chemical compounds and how they interact with fungi. This book is an essential resource for anyone interested in the science of wood preservation and the broader field of chemical ecology. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.