By Richab d Anthony Salisbury, Esq. 97 



covering, and the Cupressus Sempervirens,as well as Arbutus 

 Unedo, are rarely scorched, and never killed. The summer 

 temperature of Mill Hill, on the contrary, is as much cooler 

 than that of the vallies, as its winter temperature is milder ; 

 and it suffers greatly in dry seasons from the want of those 

 dews, which refresh the latter ; both circumstances unfavour- 

 able to the success of such perennial plants as the Dahlias : 

 nevertheless they have apparently succeeded better here than 

 in any other place. 



No intelligent gardener, after reading the foregoing detail, 

 can be at a loss how to treat these plants, nor is there the 

 smallest doubt, that by checking the luxuriance of the her- 

 bage, their flowers may be brought to perfection, even in situ- 

 ations the most exposed to autumnal frosts. I have only 

 one caution to give, which is, that in whatever soil they are 

 planted, but especially if it is poor and gravelly, they must 

 be duly watered in dry weather, till the flower-bud can just 

 be discovered in the heart of the leaves ; after which they will 

 require none whatever. Insects do not appear to attack 

 them much, except Earwigs, and for these I know no remedy 

 but personal labour in catching and destroying them : that 

 their numbers and consequent havoc, however, may be won- 

 derfully diminished in the course of a few years, by moderate 

 exertions, I have twice experienced. 



The seeds of the second and third species, Dahlia Sphon- 

 dyliifolia, and Bidentifolia, were also sent along with those of 

 the first, from Madrid, in May, 1804, by the Right Hon. 

 Lady Holland ; but one plant of the former had been 

 previously introduced from Paris, by E. J. A. Woodford, 

 Esq. and had flowered in his garden at Vauxhall in the au- 



