[ 1 
was always given in powders, with any common ve- 
hicle, as water, tea, Tmall beer and fuch like. This 
was ■ done purely to afcertain its effects ; and that I 
might be allured the changes wrought in the patient 
could not be attributed to any other thing : though, 
had there been a due preparation, the moft obftinate 
intermittents would probably have yielded to this bark 
without any foreign affiftance : And, by all I can 
judge from five years experience of it upon a number 
of perfons, it appears to be a powerful abforbent, 
aftringent, and febrifuge in intermitting cafes, of the 
fame nature and kind with the Peruvian bark, and to 
have all its properties, though perhaps not always in 
in the fame degree. It leems likewife to have this ad- 
ditional quality, viz. to be a fafe medicine ; for I never 
could perceive the lead: ill effect from it, though it 
had been always given without any preparation of 
the patient. 
The tree, from which this bark is taken, is fliled 
by Ray, in his Synopfis, Salix, alba, vulgaris, the 
common white Willow. Hasc omnium nobis cognita- 
rum maxima eft, et in fatis craflam et proceram Ar- 
borem adolefcit. 
It is called in thefe parts, by the common people, 
the willow, and fometimes the Dutch willow ; but, 
if it be of a foreign extraction, it hath been lo long 
naturalized to this climate, that it thrives as well 
in it as if it was in its original foil. It is eafily diftin- 
gui died by the notable bitternefs and the free running 
of its bark, which may be readily feparated from it 
all the fummer months whilft the fap is up. I took 
it from the (hoots of three or four years growth, that 
fprung from Pollard trees, the diameters of which 
(hoots, 
