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bottom, as the Fifties did in the common Water. At this 
time I left them till the nextMorning 3 when about Eight 
a Clock I found them as perfe&ly well and lively in all 
the Glades, as when they were firft put in. Thofe in 
the common Water expos’d to the open Air, luflef’d 
no manner of change during the whole time. After this 
I was willing to try whether the Air had again infinu- 
ated itfelf into the purg’d Water, and whether that 
mig^t not be the occafion of the Fifhes Recovery. 
Accordingly I put it on the Plate of my Pump, in the 
fame Glafs with the Fifties in it 3 and being cover’d with 
another Receiver, the Air was taken from it; yet I could 
perceive very little Air afeend in it, and to me it 
feem’d to be much in the fame State as when the Fifties 
were firft put in. I continued it inVacvo about an Hour 
and half 5 the Fifties alraoft all the time continued at the 
top of the Water, and at that time appeared as dead. 3 
for upon letting in the Air, they funk haftily to the 
bottom, without any Motion of their Fins or Tails. 
From the whole Account I obferve j 
Hrft , That Water purg’d of Air, fo far as the Me- 
thod here made ufe of, is capable to do if, renders it not 
altogether unfit to fupport the Lives of Water Animals. 
For altho’ when the Fifties were firft put in, and for 
fome Hours after, they feem’d to fuffer fome uneafinefs$ 
yet at length the Water became more familiar to them, 
or their Conftitutions in fome meafure did fo con- 
form, as to render the Water to them, and them to 
the Water more agreeable: Otherwife Ido not fee how 
their Recovery fhould follow, fince upon examining, 
little or no alteration could be found in the Circumftances 
of the Water, from the time the Fifties were firft put 
in. 
Secondly , The Fifties included with their Water from 
any Communication with the External Air, plainly de- 
monftrate, that common Water in its Natural State is 
O o o not 
