( 244 ) 
circumftances unite in the flirub from which 
you took this bloflbm: therefore it is the 
Prunus fpinola, Black-thorn, or Sloe. 
This clafs Icofandria comprehends many 
fruit-bearing trees and fhrubs, none of 
which are indigenous in this kingdom ex- 
cept the Sloe, the wild Pear, the Crab, the 
Bramble, the Medlar, the Rafberry, and the 
Sorbus, or Service-tree j that tree of the fruit 
of which Virgil tells us, the Scythians made 
a liquor in imitation of wine; that is, a fort 
of Cyder. Sitting by a good fire 
Hie notfem ludo ducunt, et focula laetl 
Fermento atque acidis imitantur viteaforbis. 
Of thefe trees and fhrubs, only the firfl 
four are found wild in Cambridgefhire. 
As this month is not very prolific of 
flowers in the fields, let us walk down to- 
wards yon rivulet. Probably we may find 
more trees that will bring to your recollec- 
tion other lines of my favourite Roman 
poet. 
Popu- Thofe trees growing on the banks 
lus - are the Populus nigra, Black Poplar: its 
male and female blofibms are on fepa- 
rate trees; confequently they are of the 
Clafs 
