""Aeration and Air-Content: The Role of Oxygen in Root Activity"" is a scientific book written by Frederic Edward Clements in 1921. The book explores the importance of oxygen in root activity and its role in plant growth and development. The author discusses the impact of different levels of aeration and air content on plant growth, and the mechanisms by which oxygen is absorbed by roots. The book also examines the effects of soil compaction, waterlogging, and other factors that can affect soil aeration and air content. This book is a valuable resource for botanists, agricultural scientists, and anyone interested in the science of plant growth and development.This Book Is In English.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.