THE mixers' friend. 203 



Author. Sir, This last Question is so far from being any 

 hardship put upon my Engine, that no Engine ever yet 

 invented was so naturally adapted to Work in these erooked 

 Shafts, as mine is : For let the Windings or Turnings of the 

 Shafts be what they will, the perpendicular weight of Water 

 is all that my Engine has to account for, and is the same as 

 if it made the Figure of a Distillers Worm, and went through 

 the straightest pipe imaginable, except a little inconsiderable 

 Friction of the Water against the side of the Pipe that is 

 crooked, more than is in the straight Pipe ; which is so small 

 a matter, that a very nice Judge would hardly be able to 

 distinguish, whether the crooked or straight Pipe carried off 

 most water in the working. For the Fleir that carries the 

 Smoak, Experience sufficiently instructs you, that you may 

 turn and icind it any way you please, and that such irindings 

 in their Drawing most Air, do rather improve than prejudice 

 your Flew, as any one experienced in Building of Furnaces, 

 can inform you. 



Miner. Well Sir, I find that our crooked Shafts will not 

 any way incommode your Engine : But what think you of 

 Accommodating your Engine to the Service of the Lead- 

 Mines, whose Shafts are many times so narrow, that it will 

 be very difficult to get your Engine down. 



Author. I perceive Sir, you are yet much a Stranger to 

 the Nature of my Engine, which is so furnished with Brass 

 Skrews, and as strong as the very Metal it self, that you may 

 take it to pieces, and with ease put it together again, fit to 

 work in a few hours time ; and so contrived, that where a 

 Man can well go down, there I can put down my Engine, in 

 several pieces, and fix them below ; for the greatest Boyler 

 belonging to my Engine, is between twenty four and thirty 

 Inches Diameter, and may, if occasion require, be made yet 

 much narrower and deeper. And that if it be difficult to 

 bring the Shaft of the 2Iine to fit my Engine, I can with 

 much ease make my Engine to ft the Shaft of any Mine. 



3finer. But will not these Brass Valves that you speak of 

 in your Engine, speedily ware out and stop your Work ? 



Author. No : They cannot fail me ; because Experience 

 shews us, That Brass Valves improve, rather then grow 



