PREPACE. 
the difficult tribes of Piperes and Euphoric; 
the whole of both will be enumerated. The re- 
maining Succulents (not yet in the gardens) 
. would bave been added from aüthors ; but from 
a fear of extending this little work too far ;—the 
trouble would have been small, as they have 
been long studied by me. They are at present 
in Sonsiderile confusion, even in authors of the 
first repute; and somé of them are described 
tnore than once, in the same work. In England, 
the botanists of late years: have paid no atten- 
tion to them. 
. With. respect. to. culture, Succulent Plants 
prefer a saudy uunmanured soil, and compara- 
tively small pots. The coarse red sand of gravel- 
pits, (the freer from loam the better,) they are 
extremely partial to, (disliking mot its lesser 
stones). mixed with about an equal quantity , or 
even less, of common earth for the more succu- 
lent species; and with. proportionably more 
earth for those which are less so. 
They must be watered very sparingly, and not 
often ia winter, but in the dry weather of sum- . 
mer require water plentifully, and almost daily, 
if shrubby ; and. of course less when more suc- 
culent—the Cacti and Euphorbig the least of 
