161 



to take away, according as circumstances may 

 require it. 



This mixed with a proper quantity of loam, 

 is in general the best compost for such plants 

 as have soft fleshy roots, also for soft wooded, 

 half shrubby, and herbaceous kinds of plants, 

 annuals, biennials, &c. &c. but is never used 

 simply by itself, and very rarely, if at all, mixed 

 with peat or sand. 



The very great variety in the nature of 

 plants, taken en masse, renders it utterly im- 

 possible to specify within the limits of this 

 work, the soil proper for each particular 

 species ; however, I think it may be advanced 

 as a rule not subject to many objections, that 

 the whole of each genus are generally fond of 

 the same compost. I have drawn up the fol- 

 lowing Table of Genera, of which any of the 

 species are known to require the aid of the 

 green-house or stove ; shewing that peculiar 

 soil, most suitable to each particular genus ; 

 deduced from observations on the extensive 

 collections I have had under my own particular 

 care, combined with those which I have had 

 an opportunity of making on others, as well in 

 the vicinity of London, as around Dublin. 



The necessity of this combination is evident 

 from the difficulty of finding the whole of the 

 genera here enumerated, in any single collec- 

 tion in the United Kingdom. 



M 



