324 VEGETABLE SUBSTANCES. 



was once largely cultivated in England to be used in 

 cookery. We find it mentioned in the ' Forme of 

 Cury ' of the time of Richard II ; and in the 

 Northumberland Household Book. Harrison says, 

 that the produce of an acre was usually worth 20. 

 Such are the changes of taste, that a plant which was 

 grown in fields to meet a general demand, is now 

 entirely gone out of use. 



