The book "The Study of Fungi and Fungal Mycelium" by Edward Henry Jacob is an essential reference for anyone interested in mycelium and fungi. In this book, the author offers to delve into the world of mushrooms, their structure, biology and impact on the environment. Thanks to detailed illustrations and visual explanations, the reader will be able to better understand the processes that occur in mushrooms and mycelium. The book will be a useful source of information for both beginners in mushroom growing and experienced mushroom lovers.