(^1002) 
he frnth gtratified the Ingenious Abroad. Atid it will doubtlcHr 
be the more welcome 3 for as much as nobody, we know of* 
hath fo much as attempted to determine , How much Water may 
weigh in Watery and pofliblyif fucha Fr^^^/e;;^ had been pro- 
posed , it would have been ludged impradlicable. 
The Method or Expedient , he made ufe of to perform it as 
near as he could, may be eafily learned by the enfaingaccompt 
of a Tryall or two , he made for that purpofe ^ which among his 
Notes he caufed to be regiftred in the following words. 
A Glafs-bable of about the bigitefs ofa pullets- egg was pur- 
pofcly blownat the flame ofa Lamp^ with afomewhat long 
ftem tarn'd up at the end , that it might the more conveniently 
ht broken o£ This Buble being well heated to rarify the Air, 
and thereby drive out a good part of it, was nimbly fcalcd at 
the end , and by the help of the figure of the ftem was by a con* 
venieQtWcightofLead depreffed under water, the Lead and 
Glafsbeifig tyed byaftringto one Scale ofa good Ballance, in 
whofe other there was putfo much weightjas fufficed tocoun- 
terpoife the BuWe , as it hung freely in the midft of the water. 
Then wth along Iron forceps t carefully broke off the feal'd end 
ofthe Buble uncer water, fo as no Buble of Air appear'd to e- 
merge or efcape throegh the water , but the liquor by the 
weight of the Atmofphere fprunginto theun-rcplesiftit partof 
the Glafs4)uble , and fill'd the whole cavity about half full 5 and 
prefently ,as lioretold, the Buble fubfided and made the Scale, 
'tTOsfaftned to, preponderate fo much, that thercneeded 4. 
drachms mi ^Zy grmes to x^inc^tht Ballancetoan ^y£qttilthri' 
um. Then taking oat the Bubic with the water in*t , we did , 
by the help of the flame of a candle, warily apply 'd, driveout 
the water (which otherwife is not eafily excluded ataverynar- 
rOiV ftem) into a G'afs counterpoifed before ^ and we found 
it , as we expefted , to w^eigh about 4dramchs and jograines, 
befides fome little that remained ia the Egg , andfomefraall 
matter that may have been rarified into vapors, which ad- 
ded to the piece of Glafs that was^ broken olFunder water and 
16ft there,might very well amount to 7.01 8. graines.By which it 
agpears notonly,^that \vater h^th Come weigfacin water, but that 
it 
