A TOUR ROUND NORTH WALES. 23! 



Knockers in mines, a kind of good-na- 

 tured impalpable people, not to be feen, 

 but heard, and whofeem to us to work 

 in the mines ; that is to fay, they are 

 types, or forerunners of working in 

 mines, as dreams are of fome accidents 

 which happen to us. The barometer 

 falls before rain or florins. If we did 

 not know the conftru<5lion of it, we 

 fhould call it a kind of dream, that fore- 

 tells rain ; but we know it is natural, 

 and produced by natural means, com- 

 prehended by us. Now how are we 

 fure, or any body fare, but that our 

 dreams, are produced by the fame natu- 

 ral means ? There is fome faint refem- 

 blance of this in the fenfe of hearing ; 

 the bird is killed before we hear the re- 

 port of the gun. However this is, I 

 muft fpeak well of thefe Knockers, for 

 they have aclually ftood my very good 

 friends, whether they are aerial beings, 



called 



