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

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              tion'd divers of my Thoughts and Expe­
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              riments concerning Fire. </s>
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              <s>WE deſigned to try whether or no
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              divers Magnetical Experiments
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              would exhibit any unuſual
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              Phænomena,
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              being made in our Evacuated Receiver
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              inſtead of the open Air: But for want of
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              leiſure and conveniency to proſecute ſuch
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              Tryals, we were induced to reſerve the
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              reſt for an other time, and to content our
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              ſelves with making that which follows.
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              <s>We convey'd into the Receiver a little
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              Pedeſtal of Wood, in the midſt of which
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              was perpendicularly erected a ſlender
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              Iron, upon whoſe ſharp point an excited
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              Needle of Steel purpoſely made, and of
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              about five Inches long, was ſo placed
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              that hanging in an
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              Æquilibrium
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              it could
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              move freely towards either hand. </s>
              <s>Then
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              the Air being after the uſual manner
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              pumped out, we apply'd a Load-ſtone
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              moderately vigorous to the out-ſide of
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              of the Glaſs, and found that it Attracted
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              or Repell'd the ends of the Needle, accor­
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              ding to the Laws Magnetical, without
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              any remarkable difference from what the
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              ſame Load-ſtone would have done had </s>
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