WITH NOTES. 



485 



the water, while the valves on occasion are cleaned ; G, 

 the force pipe ; H, the sucking pipe; and I, the water.&quot; 



FIG. I. 



Neither at the time nor afterwards does the inven 

 tion appear to have attracted any further notice in 

 that quarter. The next account we have of it is afforded 

 by u The Miners Friend, or an Engine to raise Water by 

 Fire,&quot; by Thomas Sa very, Gent, 1702; in which the in 

 vention appears with two furnaces, instead of one, and 

 with other details. In his description he refers to two 

 vessels, marked P, No. 1, and P, No. 2, which correspond 

 with the two receivers above, marked D, D. 



Remarking on these, in In the above 68th Article, 

 &quot; The Miners Friend,&quot; the Marquis of Worces- 



