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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/348.jpg" pagenum="318"/>
              our Tincture; and whether in caſe they
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              ſhould appear, they would be aſcribable
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              to the alterations of the Weather. </s>
              <s>But
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              though, during the greateſt part of a Win­
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              ter and a Spring, we took pleaſure to ob­
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              ſerve, how the Liquor would often grow
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              turbid, and after a while clear again: Yet
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              we could not finde that theſe Mutations
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              depended upon any that were manifeſt in
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              the Air, whieh would be often dark and
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              clouded, when the Tincture was clear and
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              tranſparent; as on the other ſide, in clear
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              Weather the Liquor would appear ſome­
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              times troubled, and more opacous. </s>
              <s>So
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              that being unable to give an account of
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              theſe odde changes in our Tincture (which
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              we ſuppoſe we have not yet loſt, though
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              we know not whether it have loſt its fickle
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              Nature) either by thoſe of the Air, or
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              any thing elſe that occurr'd to our
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              thoughts; we could not but ſuſpect that
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              there may be in divers Bodies, as it were
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              Spontaneous Mutations, that is, ſuch
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              changes as depend not upon manifeſt
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              Cauſes. </s>
              <s>But, My Lord, what has been
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              all this while ſaid concerning our
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              Phæno­
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              menon,
                <emph.end type="italics"/>
              is offer'd to You, not as contain­
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              ing a ſatisfactory Account of it, but to
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              aſſiſt You to give Yourſelf one. </s>
            </p>
          </chap>
        </body>
      </text>
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