zi6 OBSTACLES TO THE 



acridy acid with bitter^ fapid with naufeouSy 

 mutually weaken each other ''. 



12. 



^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 propofmg any un- 

 common plant, being doubtful what we ought 

 to expedV from it. 



JDogs mercury has been given internally, for 

 want of knowing the natural clalTes ; 

 whereas he, who is qualifyed to realbn 

 about the vertues of plants, will allow 

 only the external ufe of this plant, and 

 in glyflers. The cow parfnep has been 



^ I cannot help applying to this and the foregoing feftion 

 two verfes of that fenfible old poet, oeconomift, and hufband- 

 man Hefiod, tho' in a different fenfe from what he ufes 

 them. 



Oi/cT' oaov IV y-cLKcfx;^ T« ;^ ctctpoS'iKa) yny ovuAp. 

 Which i fhall tranflate for the fake of the unlearned reader. 

 The meaning is as follows. *' Foolilh man does not know 

 ** how much the half is more than the whole, and what 

 *^ great benefit may be found from the plants, that grow 

 *f every where about us. 



ranked 



