( 5168 ) 
the bcft way to fettle this bufincfs, befog (bme fult- 
iblc Experiments 5 I fliould recommend (becaufe I am not 
io well accommodated for this purpofej) fhefe, or fome of 
thefe, Experiments , to thofe of the Royal Societjy who arc 
in that kind better provided than I» 
i.(That hinted by my Lord ^r^^^^-^^r,) Whether a large 
low Tubej of lefs height than the common Standard ( of 
about 29 Inches Englijh.ox 27 InchesfrewcAjJmight be made 
to ftand top full of Quickfilver, though a fmall hole be 
left open at the Top 5 at leaft under Water ? I am apt to 
thiokjihatit will rather fiok flovvly and with a hilling noife, 
than fall fuddenly and filently. 
2* Whether of two poh'flied Marbles or metalline Plates, 
the lower will be found to (lick to the upper, in the exhau- 
ftcd Receiver^ longer than is accountable for fr(?m the or- 
dinary Counter-ballance in the Torricellian Experiment. 
For though Monfieur Hugens now , and Mr. Boyle ( if my 
memory do not much fail me) Have long (ince intimated 
this from his own Experience 3 yet I judge the Experiment 
worth repeating. And if it be (as I luppofe it may) found 
to fucceed,! ftiould think it may proceed from a Want of a 
Spring or Elaftick power between the Plates to force them 
aftinder 5 and in particular ( Goce with this it hath been 
tryed) that Spirit of Wine is not a Springy body. 
5. Whether a Siphon of unequal Legs will be made to 
run, in ancxhaufted Rcceiverj with Water or Quickfilver, 
ac a greater height than is accountable for 5 which though 
Monfieur Hugens have tryed it, I think it worth repeating 
in this Society. This when it doth fuccecd , I take to pro- 
ceed from the Spring of that little remaining Air in the 
Receiver not quite emptied. 
4*(Which feems of a like nature with the former,) Whe» 
ther a Tube of greater length than 29 Inches , but fo im- 
merg'd as to be lefs than fo much above the level , as CE, 
may not, if filled with well cleanfed Quickfilver, be gent- 
ly lifted up with the Quickfilver in it^not only to I(as when 
it is unpurged) but toH or higher than the ufual Stand- 
ard, 5.(which 
