The prime objective of forestry is not only to grow forest stands through to maturity in a healthy state but also to protect wood from biological degradation after conversion and during use. In this integrated approach, the role of a pathologist in forest management and timber utilisation can be appreciated in its proper perspective. Part 1 of this book talks about the general principles. Part 2 deals with the dieases of trees. Part 3 discusses causes, effects and control of microbial degradation of wood.