Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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preſſure to that of the Air in the Viol
and the Pipes, did for a good while exhi-
bite a pleaſing variety of Phaenomena,
which we have not now the leiſure to re-
cite.
And though upon the whole mat-
ter there ſeem'd little or no cauſe to
doubt, but that, if the Bubbles had not
diſturb'd the Experiment, it would mani-
feſtly enough have appear'd that the
courſe of Water through Siphons de-
pends upon the preſſure of the Air: yet
we reſolv'd, at our next leiſure and con-
veniency, to try the Experiment again,
with a quantity of Water before freed
from Bubbles by the help of the ſame
Engine.
This occaſion I have had to take notice
of Siphons, puts me in minde of an odde
kinde of Siphon that I cauſ'd to be made
a pretty while ago; and which has been
ſince, by an Ingenious Man of Your ac-
quaintance, communicated to divers o-
thers.
This occaſion was this, An emi-
nent Mathematician told me one day, that
ſome inquiſitive French Men (whoſe
Names I know not) had obſerv'd, That,
in caſe one end of a flender and perforated
Pipe of Glaſs be dipt in Water, the Li-

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