( ? ) 
little while when at lowed:, the Water won’t have 
time to run out.* So likewife the PiUon mud be 
flopp’d when at highed;, that the Receiver may have 
time to fill. 
Mr. Haskim likewife propofed another Way, rep;c- 
fented in fig, 2 ; where the fame Letters rcprefenc the 
fame Parts, on!y here the Barrel is moveable by the 
two Chains El E 2, and indead of a folid Pidon, 
the hollow Cylinder C i rc is fix’d, and the ^ete try 
moving up and down in the lower Part of it fucks 
and forces the Water thro’ the Elbow. The Figure 
reprefents the Engine fucking, by means of the 
fury hanging from a 0 to mm^ !n order to force, be- 
fore any Water can be driven out, the Mercury in the 
inner Cylinder mud defeend from 0 0 to mm, and rile 
up to pp between that Cylinder and the Barrel i fo 
that here alfb a great deal of time is lod 5 befidcs 
the great Quantity of Mercury us’d, which is very ex- 
penfive ; becaufe as much Mercury is mov’d every Stroke 
as the Water rais’d. 
Thefe Difficulties very much puzzled Mr, Haskins, 
and quite difcoiirag’d fome other Perfons that had 
got the Secret of the Invention, and were fetting up 
againd him. But when I had confider’d the Matter a 
little, tho’ I had not time to contrive a Machine for 
it, I told him, That a little Mercury might be made 
to raife a great Quantity of Water, and there fiiould 
not be fuch a lofs of time as in his Engines ; but 
that I would have him find it out before I affided 
him farther. In a little time he found out the Con- 
trivance reprefented in 4; and afterwards that of 
Fig. 3 ; W’hich lad Was what I had thought of. And 
both thefe were alfo found out by the late Mr. William 
Ureem, who was an excellent Mechanick, 
B 2 
F I G. 
