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

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              <s>
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              when it was let in, increaſ'd the weight of
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              the
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              Æolipile
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              as much as before, namely,
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              Eleven Grains; though there were alrea­
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              dy in it twelve Drachmes and a half, be­
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              ſides a couple of Grains of Water, which
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              remain'd of that we had formerly put in­
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              to it to drive out the Air. </s>
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            <p type="main">
              <s>
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              Merſennus
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              indeed tells us, that by his
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              account Air is in weight to Water, as 1 to
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              1356. And adds, that we may, without
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              any danger, believe that the gravity of
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              Water to that of Air of a like bulk, is
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              not leſs then of 1300 to 1. And conſe­
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              quently, that the quantity of Air to a
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              quantity of Water equiponderant there­
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              to, is as 1300 to 1. But why we ſhould
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              relinquiſh our own carefully repeated try­
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              als, I ſee not. </s>
              <s>Yet I am unwilling to re­
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              ject thoſe of ſo accurate and uſeful a Wri­
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              ter: And therefore ſhall propoſe a way
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              of reconciling our differing Obſervations,
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              by preſenting, that the diſcrepance be­
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              tween them may probably ariſe from the
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              differing conſiſtence of the Air at
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              London
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              and at
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              Paris:
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              For our Air being more cold
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              and moiſt, then that which Your Lord­
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              ſhip now breaths, may be ſuppoſ'd alſo
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              to be a fourth or fifth part more heavy. </s>
              <s>I
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              leave it to be conſider'd, whether it be of </s>
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          </chap>
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