. The philosophical works of the Honourable Robert Boyle esq.: abridged, methodized, and disposed under the general heads of physics, statics, pneumatics, natural history, chymistry, and medicine. tly expanded. For, the nSerfnf ^? ^^dft it containd airby an attentive ear,- and, as th^ rarifadbn ^ ^ ^ P^^^ heardbles will fometimes break by the baif^.fu^^ S^ ^^ the bub-ly. if the fealedend of the^lafi be broke l^lr^^ • ?^>^ft-by the preffure of the atmffphere sff^^ ^ ^ ?^ ^^ «ii will,artificial fountain, till it l^ab^T hree „™Z, ^ ^*^^ *<= ^-^of the air appears to be very confiderahle f
. The philosophical works of the Honourable Robert Boyle esq.: abridged, methodized, and disposed under the general heads of physics, statics, pneumatics, natural history, chymistry, and medicine. tly expanded. For, the nSerfnf ^? ^^dft it containd airby an attentive ear,- and, as th^ rarifadbn ^ ^ ^ P^^^ heardbles will fometimes break by the baif^.fu^^ S^ ^^ the bub-ly. if the fealedend of the^lafi be broke l^lr^^ • ?^>^ft-by the preffure of the atmffphere sff^^ ^ ^ ?^ ^^ «ii will,artificial fountain, till it l^ab^T hree „™Z, ^ ^*^^ *<= ^-^of the air appears to be very confiderahle fin i r ^^nce the weightthe bubble Would contain, /enTats therein nott^v^°P^/^ °f ^hatlance In one repetition of thi If °f °^ ^^ ^^ mto the buSble, weighed iieai^f of r;,-i ^ ^? ^e ad-water 90S grains ; whenc?,Tf S rVadmit?;;-^! ~«nt oftubble the whole air it containd, may be ^ ?f^ * ^ *«And thus the water weichd abont L. ,^ ^ Appofed at a gi-ain. bubble ; which, all thing! confidery ^. * ^^ ^ ^ the . trials, whereby we detemin^Scr4vk; I ^ = water, as j to looo. =peciflc gravity of air, to be to that of PARA- J^. p. zS/. PXATE. Hydroftaticd Paradoxes^ 287 PARADOX I. Statics. In alt fluidsy the upj^er parts gravitate on the lower, Suppofe one end of a fmall, cylindrical, open glafs tube, plunged in-to oil of turpentine, and that liquor to be raifed, by fuftion, to a con-venient height therein j when the lips being removed, and the upper ori-fice of the tube nimbly ftoppd with the finger, to prevent the fluid fromfailing back, imagine it thus placed perpendicularly in the glafs A B C D % s,almoft fiird with water, fo that the furface of the oil may ftand fome-what higher than that of the water. This done, and the finger removedfrom the upper orifice of the tube, the oil will not fall out at the lower,but remain fufpended near its former altitude. But oil of turpentine,,being an heavy fluid, has a tendency downwards ; and as the l
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