522 44 De „feription of Mr. DEARBORN’ $ Pump-Engine. 
round the bolton ‘the infide, ‘as large as the circle of ‘holes in 
the brafs, round which hollow on the: face of the conductor, a 
is nailed which, plays : on the margin of the brafs plate, 
is Witt 
leather. i 
when the condu@tor'turns. 
„ai have raifed 3. tube of 30 feet on. my. pumps. put, ch rir 
of the feafon | prevents my. compleating ii it; having & far. executed. 
it only, as for one perfon to work at tbe brake.;..I. can myfel£ 
throw water on the top of a neighbouring building, the neareft 
part rt of which is 37! feet from the. pump, and. between, 3@,ands 
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