viii Preface 



subject, that which would be most useful to those readers for 

 whom the book is intended, namely, the practical lovers 

 and owners of trees. 



Special acknowledgment is due to Dr. N. L. Britton 

 under whose supervision the drawings of exotic tree species 

 — and only such have been illustrated — were made. It is 

 due to him to explain, that in the captions under these 

 illustrations, contrary to the usage of Dr. Britton and 

 many other botanists, species names derived from patro- 

 nymics have been capitalized to conform with the mode of 

 notation applied in the text, which is the mode still in use 

 in most nurserymen's catalogues. 



The author acknowledges his indebtedness to a large 

 number of pubUcations, too many to cite, from which he 

 has extracted information, especially the many bulletins 

 of Experiment Stations on combating insects and fungi. 

 He claims originahty mainly in the manner of presentation, 

 and hopes that he has performed a useful service. 



B. E. F. 



Toronto, March, 1910. 



