PREFACE TO SIXTH EDITION. 



In preparing this edition for the press, such additions 

 have been made to some of the chapters as a constantly 

 extending knowledge of the wants of amateur culti- 

 vators especially seemed to demand. A chapter on 

 Vine-roots is also given, and a series of notes on the 

 most celebrated Vines I am acquainted with, with a 

 description of the earliest Vinery of which I can find 

 any record. 



It is a source of much gratification to me that my 

 humble efi'orts to extend and simplify the cultivation 

 of one of the noblest and most generous plants cul- 

 tivated by man have met with such signal success. 



Dalkeith Gardens, May 28, 1869. 



WM. THOMSON. 



