OBSTACLES TO THE 
zi6 
acrid , acid with bitter , fapid with naufeous y 
mutually weaken each other h . 
12 . 
T he ignorance of the natural clajfes. From 
hence it happens that we cannot form any 
judgment, conformable to botanic principles, 
of one plant from the knowledge of another. 
And thus we are afraid of propofing any un- 
common plant, being doubtful what we ought 
to expe6t from it. 
Dogs mercury has been given internally, for 
want of knowing the natural daffes $ 
whereas he, who is qualifyed to reafon 
about the vertues of plants, will allow 
only the external ufe of this plant, and 
in glyfters, The cow parfnep has been 
h I cannot help applying to this and the foregoing fe&ion 
two verfes of that fenfible old poet, ceconomift, and hulband- 
man Hefiod, tho’ in a different fenfe from what he ufes 
them. 
Ntf-r/o/ xx iGtunv oc co ttKzov iUAKru rra V7ve, 
Ot/cf’ oaov iv y&K&yy tz ^ yay ovzicty. 
Which i (hall tranilate for the fake of the unlearned reader. 
The meaning is as follows. “ Foolilh man does not kno\v 
how much the half is more than the whole, and what 
" great benefit may be found from the plants, that grow 
?? every where about us. 
ranked 
