xxxiv PREFACE. 



For example, Richard Anthony Salisbury, Esq. the uni- 

 versally acknowledged head of our English botanists, no 

 longer cultivates his former gardens at Chapel Allerton, 

 Yorkshire, or at Mill Hill, Middlesex, but confines his at- 

 tention to a choice collection of the most curious plants in 

 pots, arranged in the yard of his house in Queen Street, 

 Edgeware Road. In like manner, Messrs. Loddiges, 

 nurserymen at Hackney, have a very large collection of 

 hardy herbaceous plants, in small pots, set on beds of 

 scoria, to keep the soil contained in them moist. 



