[i094] 
I hope that the learned in Hydroftaticks, being by thefe 
means aflured ot the poffibility of fuch a Motion, will be 
the more ready to think of it, and find perhaps forae- 
thing better then this. Bat if no body doth it, 1 will my 
felf within fome months, publifli this contrivance, with 
theufes itmay be applied to. . 
According to the Inventors defire the I{pyal Society 
order d that the thing fhould be obferved: the Ingenious 
Mr. HooJ^ faw it for near half an hour , there being 
other perfons to obferve it longer, who watch't it about 
four hours together, during which time there fprung out 
of the Rock CC. above a hundred times more water, 
then a veflel of the fame bignefs could hold: lothat 
they went away not doubting but the water did circulate 
in the faid Engin, and might continue a great deal 
longer, fince it did run ftill as conftantly and as Jiigh as at 
their firft coming.- and the Honorable Mr. Boyly know- 
ing the whole contrivance of the Engine, allures, that 
it may continue for a whole day and more i and thinks 
it worth to be left for fome time^ to the enquiry of 
Ingenious men. 
:V iA -/.noil a(^n 131 t-m od: 
111 ■ . ":■ ■ 
^ Treatife 
