INTRODUCTION xiii 



diseases to which trees are liable, and for which 

 the most approved remedies are suggested in 

 the following chapters. 



This book is written with the distinct 

 object in view of bringing home to owners 

 of trees, or those in charge of such, that, at a 

 small outlay of labour and expense, the life- 

 time of old, historic, or accidentally damaged 

 specimens may be greatly extended. From 

 personal experience, it is quite clear that the 

 work of tree repair is but rarely engaged in 

 and little understood, and in the following 

 chapters the aim has been to give the necessary 

 information for carrying out such operations 

 in as clear and concise a manner as possible. 

 The illustrations will, it is hoped, assist in 

 elucidating doubtful matter. As showing the 

 interest that is at present being taken in 

 connection with the rapid spread of tree pests, 

 it may be mentioned that the Governors of the 

 North of Scotland College of Agriculture and 

 Forestry are offering prizes for approved 

 collections and specimens illustrative of the 

 damage done to forest trees by fungi, insects, 

 mammals, and birds. Three of the illustra- 



