IMPROVEMENT OF PHYSIC. 211 
the truth, i fufped they more generally err 
this way at prefent ; while they order drachms 
of plants for an infufion, where ounces would 
be more proper. On the other hand mounte- 
banks, and quacks, men of an intrepid mind, 
and invincible impudence, oftentimes make 
a cure, when the phyfician of probity fails. 
If any one were to prefcribe only two grains 
of rhubarb for a purge, he might as well 
do nothing at all. The honey -fuckle is 
ufed in decobtions, but not in the quan- 
tity neceffary ^ for which reafon its ver- 
tue in purifying the blood is known but 
to few. The dofe of the china root ought 
to be large, or no good can be expebted 
from it in venereal cafes. Thofe reme- 
dies which are fought for amongft ve- 
getables for curing the venereal difeafe 
are perhaps given more fparingly, than 
they ought. 
8 . 
rfhe ignorance of apothecaries in botany , who 
often fell one plant for another ; by which means, 
when the defired effebt is not obtained, the 
phyfician is deterred from the ufe of them 
for the future. 
For rad . hermodaft? which is recommended 
P % 
