/ 0 \ 
[ lS .9 ] 
fhoots, at their biggeft end, were from one to four or 
five inches: it is poffible, and indeed not improbable, 
that this cortex, taken from larger or older fhoots, or 
from the trunk of the tree itfelf, may be ftronger ; 
but I have not had time nor opportunities to make 
the experiments, which ought to be made upon it. 
The bark, I had, was gathered in the northern parts 
of Oxfordfhire, which are chiefly of dry and gravelly 
nature, affording few moift or moory places for this 
tree to grow in ; and therefore, I fufpeCf that its bark 
is not fo good here as in fome other parts of the king- 
dom. Few vegetables are equal in every place ; all 
have their peculiar foils, where they arrive to a greater 
perfection than in any other place : the beft and 
ftrongeft Muftard-feed is gathered in the county of 
Durham 3 the fineft Saffron-Flowers are produced 
in fome particular fpots of Eflex and Cambridgefhire; 
the belt Cyder- apples grow in Herefordfhire, De- 
vonfhire and the adjacent counties; the roots of 
Valerian are efteemed moff medicinal, which are 
dug up in Oxfordfhire and Glocefterfhire : And there- 
fore why may not the Cortex Salignus, or Cortex 
Anglicanus, have its favourite foil, where it may flo- 
rifh moff, and attain to its highefl perfection ? It is very 
probable that it hath ; and perhaps it may be in the 
fens of Lincolnfhire, Cambridgeflflre, Eflex, Kent, or 
fome fuch like fituations; and, though the bark, which 
grew in the county of Oxford, may feem in fome 
particular cafes to be a little inferior to the quinquina, 
yet, in other places, it may equal, if not exceed it. 
The powders made from this bark are at flrfl: of a 
light brown, tinged with a dufky yellow, and the 
longer they are kept, the more they incline to a 
cinnamon 
