xxv i ] 



I am obliged to Mr. Sea RANKS of 

 Hal field, for the particulars he gave me 

 of his experiments on burnet. They are 

 now extremely Satisfactory and conclu- 

 sive. 



It is only by communications of this fort, 

 that fuch an undertaking can be rendered 

 tolerably complete. Nor fhall I conclude 

 without again requesting thefe, and other 

 cultivators, to favour me with a continua- 

 tion of their trials ; from whence the 

 public will find, that real utility has caufed 

 an increafe of feveral practices which per- 

 haps curiofity alone began. 



A SIX 



