4* That the fecond Pot or Veflel, as in the Draught 
Tab. VI, Fig. 2. will rarefy or expand 40 Gallons of 
Water, Wine Meafure, per Hour, and will produce 
36,960,000 cube Inches of elaftic Steam per Hour, 
which is per Minute 616,000 Inches. 
5. That both being united together make 1,3 86,000 
cube Inches of Steam every Minute, from 346 Inches 
of Water. 
6 . That, by an Experiment made at a Fire-engine, 
40 Gallons of Water per Hour, made into elaftic Steam 
in this Method, will efFe&ually give Motion to a 24 
Inch Cylinder Fire-engine . 
7. Thar, by true Experiments made at Wedgbury z nd 
Newcastle on Tyne-, One hundred Weight, contain- 
ing ii2 ib of Pit-coals, will, and is fufheient in this 
Method to expand or rarefy 90 Gallons of Water per 
Hour into an elaftic Steam or Vapour. 
8. That, by the belt Accounts and Obfervations I 
could get and make, theyconfume under their Boilers 
to make the fame Quantity of Steam, Three hundred 
Weight of Pit-coal, at 112 lb to the Hundred, in 
working a Fire-engine one Hour. 
9. That 95 Gallons of Water ^wHour, expanded 
or rarefied into Steam, will work 336 Inch Cylinder 
Engine. 
10. From thefe Obfervations I conclude, that this 
new Invention will fave at leaft 60 per Cent, in Pit- 
coals, to work a Fire-engine: 
Tab. VI. Fig 1. 
A, A, The Two Tots. 
B, B, The Two Copper Heads or Globes , 
5 P C,C, 
