Mi OBSTACLES TO THE 
In the rheumatifm, the apothecary fome- 
times gives the root of the meadow faf- 
fron ; fome times of one of the irifes , which 
differ from it in vertue. Hence the 
effedt of the phyfician’s prefcription being 
uncertain, he is at lafl obliged to give 
it up entirely. For the fcabious they give 
the centaury , FI. Suec. 708. For the bran- 
kurfine , the cow-parfnep , 231 ^ the root 
of the toothwort , which is excellent in 
the tooth-ach, is negledted, becaufe the 
apothecary does not know, whether it 
ought to be taken from the toothwort 
565, or 518, or fome other plant. In- 
itead of the root of the burnet faxifrage , 
which is a good aflringent in the haemor- 
rhage, the root of the burnet is wrongly 
fubftituted. To this may be referred the 
miftake of felling the St. John's wort 6 24 
for the St. John's -wort 625, which is vul- 
nerary and good in worm cafes. 
9 - 
'The ignorance of phyficians in botany , or their \ 
want of care to re] eft ufelefs , fpurious and im - 
proper fuccedaneums.. 
We fufpedl that this formerly wa,s the cafe ; ; 
but now, that the knowledge of botany is 
carried 
