Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae
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              <s>
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              pro veſtrâ humanitate tenuitati meæ ve­
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              niam dabitis, ſi quid afferre contigerit ita
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              planum ac facilè, vt veſtrorum ingeniorum
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              ſublimitati non reſpondeat. </s>
              <s>Nihil habeo
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              certi quod ſtatuam de terræ quantitate, ne­
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              que enim hactenus otium fuit, quæ conce­
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              peram, in praxim deducere. </s>
              <s>Fieri autem
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              poſſe exiſtimo, vt operâ non longâ propo­
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              ſitum ſcopum aſſequamur: duo nimirum̨
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              præcognoſci oportet, quibus notis ac certis
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              terrenam diametrum poſſumus inueſtigarę. </s>
              <s>
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              Primum eſt altitudo oculi ſupra maris iņ
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              immenſum patentis ſuperficiem, quæ non
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              æquabili planitie explicatur, ſed ſphæram̨
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              æmulatur: hanc verò altitudinem certiſſi­
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              mè nobis innoteſcere poſſe quis neget? </s>
              <s>cum
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              eam funiculo vel phyſicâ aliâ menſurâ ſæ­
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              piùs dimetiri liceat. </s>
              <s>Alterum, quod in hoc
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              negotio requiritur, eſt angulus, quem cum
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              lineâ perpendiculi ad terræ centrum ductâ
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              conſtituit opticus radius extremum hori­
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              zontem allambens: hunc ſi organo ad id
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              affabrè elaborato obſeruaueris, ſereno cœlo,
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              tranquillo mari, cum minima refractionis
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              ſuſpicio ſubeſſe poteſt, quid certius requi­
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              ras? </s>
              <s>cum organo eidem in dimetiendis ſy­
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              derum altitudinibus aut diſtantijs acquie­
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              ſcas. </s>
              <s>His autem duobus cognitis terræ quo­</s>
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          </chap>
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