l' R E P \ ( I . 



Tn r Fourth Volume of the Transaction* of the HorticuL 

 txiral Society of London ha* been published within the 

 same period, and on the same plnn as thi 

 with the addition of a Supplement to the Four Part*, which 

 have appeared within the last two years, at regular intervals 

 of six months. 



On examining the content* of this volume, the Reader will 

 not fail to perceive, that the number of the contributor* of 

 Papers m remarkably increased ; and it cannot be observed 

 without satisfaction, that a very great proportion of the 

 Authors arc practical men. Their number and the diver- 

 sity of their situation in life furnish most convincing eri. 

 deuce of the progress made by the Society generally, in 

 exciting attention to the object* of its institution, and of its 

 influence, especially amongst that class of persons whose co- 

 operation is essential in effecting what must ever be .so much 

 desired— the Ottte of theory With actual practice. 



The additions to the numbers of the Society was a source 

 of exultation in the Preface to the preceding volume ; the 

 continued and uniform increase during the two faist years 

 cannot fail to afford to those who take an active port in the 



VOL. IV. A 



