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

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              <s>
                <pb xlink:href="013/01/316.jpg" pagenum="286"/>
              letter ſuppoſing the gravity of the Aire)
                <lb/>
              it will not be impertinent to determine
                <lb/>
              more particularly then hitherto we have
                <lb/>
              done, what gravity we aſcribe to it. </s>
            </p>
            <p type="main">
              <s>We tooke then an
                <emph type="italics"/>
              Æolipile
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              made of
                <lb/>
              copper, weighing ſix ounces, five drachms,
                <lb/>
              and eight and forty graines: this being
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              made as hot as we durſt make it, (for feare
                <lb/>
              of melting the mettle, or at leaſt the So­
                <lb/>
              dar) was removed from the fire and im­
                <lb/>
              mediately ſtopped with hard wax that no
                <lb/>
              Aire at all might get in at the little
                <lb/>
              hole wont to be left in
                <emph type="italics"/>
              Æolipiles
                <emph.end type="italics"/>
              for the
                <lb/>
              fumes to iſſue out at: Then the
                <emph type="italics"/>
              Æolipile
                <emph.end type="italics"/>
                <lb/>
              being ſuffer'd leaſurely to coole was again
                <lb/>
              weighed together with the wax that ſtopt
                <lb/>
              it, and was found to weigh (by reaſon of
                <lb/>
              the additionall weight of the wax) ſix
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              ounces, ſixe drachmes, and 39 graines.
                <lb/>
              </s>
              <s>Laſtly, the wax being perforated without
                <lb/>
              taking any of it out of the Scale, the
                <lb/>
              externall Aire was ſuffered to ruſh in
                <lb/>
              (which it did with ſome noyſe) and then
                <lb/>
              the
                <emph type="italics"/>
              Æolipile
                <emph.end type="italics"/>
              and wax, being againe
                <lb/>
              weighed amounted to ſix ounces, ſix
                <lb/>
              drachmes, and 50. graines. </s>
              <s>So that the
                <lb/>
                <emph type="italics"/>
              Æolipile
                <emph.end type="italics"/>
              freed as farre as our fire could
                <lb/>
              free it, from it's Aire, weighed leſſe then </s>
            </p>
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