20^ OBSTACLES TO THE 



driving out thefe eruptions-, though we 

 may be aflured of their vertues by un^ 

 doubted experiments long fince made. 



3- 

 ^'he neglect of specifying difieinpers. Hence 

 remedies, which are excellent for fome difeafes 

 in one man ; nay even thofe very remedies 

 that get the name of fpecifics on account of 

 fome very remarkable vertue, when admini- 

 ftered to another, are either of no fervice, or 

 even do mifchief •, whereas they would perhaps 

 never fail of a good effect, if the fpecies of 

 the diftemper were the fame. Therefore till 

 phyficians regulate the dodrine of difeafes in 

 the fame manner, that botanifts have done that 

 of plants, medicines muft be neceflarily pre- 

 carious *. 



Were any one to fet about curing the h^mor^ 

 rhoidd colic in a pkthoritic confiitution by 

 fpirituous and hot carminatives^ which are 

 proper for the flatulent colic in a cold^ and 

 phlegmatic confiitution^ he would foon find 

 moll: fatal proofs of his error. Of this a 

 very remarkable inflance may be feen in 



* As well as i remember this obfervatlon is taken from 

 Sydenham. But whoever is author of it, moil certainly 

 phyfic mull ever be slx^ imperfcA^, till thi? grand dcfidera- 

 tuni be performed. 



d;nr. 



