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

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1count my ſelf, in paying of a duty to
you, to have done a piece of Service to
the Commonwealth of Learning.
Since
it may highly conduce to the advance­
ment of that Experimental Philoſophy,
the effectual purſuit of which, requires
as well a Purſe as a Brain, to endeere it
to hopeful Perſons of your Quality: who
may accompliſh many things which o­
thers can but wiſh or, at moſt, but deſign,
by being able to imploy the Preſents of
Fortune in the ſearch of the Myſteries of
Nature.
And I am not faintly induc'd to make
choice of this Subject, rather then any
of the expected Chymical ones, to enter­
tain your Lordſhip upon, by theſe two
Conſiderations: The one, That the Ayr
being ſo neceſſary to humane Life, that
not onely the generality of Men, but
moſt other Creatures that breath, can­
not live many minutes without it; any
conſiderable diſcovery of its Nature,
ſeems likely to prove of moment to
Man-kinde.
And the other is, That the
Ambient Ayr, being that whereto both
our own Bodies, and moſt of the others
we deal with here below, are almoſt per­
petually contiguous; not onely its alte-

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