OP WATER-MILLS. 83 



face towards that of the lower. For, if the furrows of LECT 

 both stones lay the same way, a great deal of the corn ^^v-x. 

 would be driven onward ID the lower furrows, and so 

 come out from between the stones without being either 

 cut or bruised. 



When the furrows become blunt and shallow by 

 wearing, the running stone must be taken up, and both 

 stones new drest with a chisel and hammer. And every 

 time the stone is taken up, there must be some tallow 

 put round the spindle upon the bush, which will soon 

 be melted by the heat the spindle acquires from its 

 turning and rubbing against the bush, and so will get 

 in betwixt them : otherwise the bush would take fire in 

 a very little time. 



The bush must embrace the spindle quite close, to 

 prevent any shake in the motion, which would make 

 some parts of the stones grate and fire against each 

 other ; whilst other parts of them would be too far 

 asunder, and by that means spoil the meal in grinding. 



Whenever the spindle wears the bush so as to begin 

 to shake in it, the stone must be taken up, and a chisel 

 drove into several parts of the bush ; and when it is 

 taken out, wooden wedges must be driven into the holes ; 

 by which means the bush will be made to embrace the 

 spindle close all around it again. In doing this, great 

 care must be taken to drive equal wedges into the bush 

 on opposite sides of the spindle ; otherwise it will be 

 thrown out of the perpendicular, and so hinder the 

 upper stone from being set parallel to the under one, 

 which is absolutely necessary for making good work. 

 When any accident of this kind happens, the perpen- 

 dicular position of the spindle must be restored by 

 adjusting the bridge-tree 5 T by proper wedges put be- 

 between it and the brayer Q R. 



It often happens, that the rynd is a little wrenched in 

 laying down the upper stone upon it ; or is made to sink 



a 2 



