( i6i ) 
Afcent of the ^V'ate^ in them) is greater and greater, 
and is moli: demonlfrable by the Experiments^' of the 
Planes • for their inward Area being always the fame, 
lb that as they are placed nearer and nearer to each other, 
the Cavity or Space between them becomes lefs and 
lefs, and confequently the Difproportions are increafed, 
whereby the Power of their Attraclion is augmented. 
experiment IV. 
This Experiment I take to be very Analogous to thofe 
lately made on the feeming fpontaneous Afcent of 
AVater between Glafs, Marble, and Brafs Planes, as al- 
fo with thofe made in Capillary Tubes ; fince it feems to 
proceed from the lame Principle, and fubjecl to the fame 
Laws as appears by matter of Fadt ; which take as fol- 
lows.’ I took a Glafs Tube about ^2 Inches long, the 
Diameter of its Cavity near three quarters of an Inch : 
This when I had ty’d a Piece of Linnen Cloth at one 
end, ’(to prevent tlie Afhes from falling out; I proceed- 
ed to till with Afhes at the other : the Afhes were fifred 
thro’ a pretty tine Searfe. At every fmall Portion I put 
in, I ramm’d them ftrongly down with a Rammer, 
whofe Bafis was very little lefs than the Bore of the 
Tube; by which means, I laid, or rather crouded them 
as dote together as potfible. When the Tube was be- 
come full, I ty’d over that end of it by the Neck a fmall 
and limber Bladder, having firft exprell: all the Air out 
of its Body, in order to receive that Air, which I exped- 
ed would be forc^d thro’ the Afhes upon the Afcent of 
the Water. In this manner I plung’d the end of the 
Tube, to which I had ty’d the Linnen, (as it was,;un. 
der the furface of Water in a Glafs, and found the Wa- 
terprefently begin to Afcend in it : It arofe a pretty pace 
at firll: • for in 16 Minutes time it hadafeended near an 
dneh and three quarters: but as it arofe higher, fo its 
Prog refs 
