vi ' PREFACE. 



How incomplete my work is may be gauged by the statement 

 that, while there are undoubtedly several thousand woods used 

 in various parts of the world, only about 750 are here enumerated; 

 but these include most of those which are practically known in 

 general commerce, and to have dealt with more would have 

 necessitated a volume fully twice as large. 



G. S. B. 



