XX PREFACE. 



required, as before mentioned, is attention and 

 perseverance in the rules prescribed ; and those 

 who adopt them will, I am confident, acknow- 

 ledge their utility, and be sensible of the benefits 

 that must eventually arise from a practical 

 improvement in this particular branch of 

 horticulture. 



THOMAS WATKINS, 



Highbury Park, January 30, 1824. 



