The First Steam-Boat

ûancling- his whole 3oåy is 'heavier than the Water in the fame Space-. But a IMan’s Body Conning of Heterogeneous Tavles, ana W« ths ter, thole parts Ms Demø are preffedin proportion to the height of the Water a- bovehim, noticcørdm«, t o thecjuanti - ty of the Water heia in. j.n+i,o Tor if a Penøn.wer'é to dølcenatotne- Bottom of A Well full oi'Water, hisBo<fr would bepreis’dthe f»me asifhe defcend- ed theûméDepth lintothe $ea, fortheie the fame Trefiun? againita Pool-head as the re is a^mYt^e Seâ-Urtk àt the lame Depth, as hath been before Jemonftrat- Thus 1 have ewdeavouiM to explain the Nature of thö Pnaiutfe of thö Au- on other Bodies, by comparing it with other Fluids that ate Viable to ow as ■Mercury, Water, an^lmce the Frei- fure is fo V^y i* is the m<ne to Ije apply*«^ "tO S purpofe wheiøin 2H forts of manual Operations are Infurficient. For this -preû')rt Undertaking cannot ba fuppoied to be done by Strength of Men or Hones, orby any Machine driven by either, Laftly, the Jitjnoiphere being of a great weight andUnringtoget w where th ere JD Z 1S