Schott, Gaspar, Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet. , 1657

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                <pb xlink:href="051/01/203.jpg" pagenum="172"/>
              nota, & ab Æolopilæ capacitate detrahatur; notam relinquet
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              aëris quantitatem & nunc addenſati, & antea rarefacti. </s>
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            <p type="main">
              <s>Hæc ex Merſenni ſententia; quæ tamen valde incerta mi­
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              hi videntur, tum quia non ſcitur quando Æolopila eſt ſummè
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              calefacta, tum quia aqua abſumitur à calore Æolopilæ ante &
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              poſt attractionem, tum denique quia conſtare non poteſt, utrum
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              aër reſiduus poſt aquæ attractionem ſit ad naturalem ſtatum re­
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              dactus, an verò præter naturam addenſatus, aut rarefactus. </s>
              <s>Vi­
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              de quæ dicimus infrà in Appendice. </s>
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              Concluſio
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                <emph type="center"/>
              Protheoriæ Quartæ.
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              <s>DIci hîc nonnulla poſſent de ſalientium ex fontibus pneuma­
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              ticis, quos deſcribimus Parte 2. Claſſe 1. cap. 2. Machina 8.
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              longitudine, altitudineque, & cum tuborum ſalientibus compa­
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              rari, ut facit Merſennus in ſuis Hydraulicis Propoſit. 28. ſed
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              quoniam valde incerta ſunt & quæ Merſennus affert, & quæ à
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              me, & à quocunque alio, varijs experientijs inventa, afferri poſ­
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              ſunt; ſatiùs judicavi, omnino abſtinere. </s>
              <s>Dependet enim ſalien­
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              tium hujuſmodi longitudo atque altitudo, non à tuborumlongi­
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              tudine, ſed potiſſimùm ab aëris intra fontem compreſſi vehe­
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              mentia, quæ infinitis modis variari poteſt; & cùm omnia exper­
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              tus fueris, dubius adhuc hærebis. </s>
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              <s>Dici præterea multa poſſent de fluxu aquæ per tubos incli­
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              natos & horizontales; examinarique, quæ habet Joannes Bapti­
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              ſta Balianus lib 4. & 5. de Motu gravium, ſeu lib. 1. & 2. de motu
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              liquidorum: at quoniam hæc non admodum conducunt fini no­
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              ſtro in hoc Opere intento, & longiorem ſermonem requirunt;
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              omittenda potiùs omnino quàm paucis perſtringenda pu­
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              tavi, acturus de illis in Mechanica Univerſali. </s>
              <s>Ad
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              praxin igitur, miſsâ theoriâ,
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              procedamus.
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