ax 
£u% 
AG 
*•3 
DISSERTATION concluded. 
The limits of this extensive family may be considered, with some 
degree of accuracy, to be bounded by about three hundred (spe¬ 
cies and distinct varieties): consequently, in the termination of 
this Volume, the-Genus may be regarded as half delineated. The 
Cape of Good Hope has been, and still continues to be, the em¬ 
porium for this unrivalled tribe of plants; and unless some new 
source should be found to extend this already numerous Genus, by 
the discovery of some unexpected mine of novelty; we otherwise 
have little doubt but the termination of the Sixth Volume will be 
found to contain all the species and distinct varieties. The diffi¬ 
culty of preserving many of this fine tribe is still a subject of 
general complaint, and by no means easy to be remedied where the 
situation is low, as the great enemies of the Ericas are the fogs, 
which invariably gravitate towards the marshes and low grounds: 
but where the situation is elevated and open, the preservation of 
the major part of them is by no means so difficult. Greater care 
is requisite in the watering of them than is generally imagined, 
as too much renders them weak, and subjects them to damp off; 
whilst, on the contrary, too little is frequently fatal; for, if 
they once droop their heads for want of water, they very rarely 
survive the neglect. 
