IV 



PREFACE. 



Particular care is taken that no plant that does not give promise of being really 

 worthy of general cultivation is admitted to the revised edition. This applies as much 

 to those that require artificial heat to grow them, as it does to the hardy kinds ; 

 respecting the latter section, it may be said that there are fewer to choose from than in 

 the case of the tender exotics. Preference of place is given to species, particularly 

 amongst the subjects that are chosen for coloured plates, but, with a view to make the 

 work of as much use as possible to the gardening community, such hybrids as possess 

 unusual merit are admitted. 



Accompanying all the new plants short cultural notes have been given, which, it is 

 hoped, will be useful in their cultivation. 



