41^ ESSAYS AND OBSERVATIONS 



diftinguifh fymptoms that only precede o- 

 thers from thofe that produce others : in 

 ihort, of what confequence it is not to mif- 

 take that for a caufe which is only prior in 

 point of time j efpecially as this, I fear, is 

 too common a cafe, and often requires our 

 utmoft care, in obferving the juvantia znd 

 Icedentiay to avoid it. -' liinflr-r zih io 



Art. 



