Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

Table of figures

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              <s id="s.001661">
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              cedit, quòd parietes porulorum pumicis duri
                <expan abbr="sũt">sunt</expan>
                <expan abbr="cõ-ſiſtentes">con­
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                ſiſtentes</expan>
              , & inter ſe connexi, & vniti, è contrà in gle­
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              ba parietes pororum ſunt valdè fragiles, & diſſolubi­
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              les; vnde ſequitur, quòd aquæ particulæ vi grauitatis
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              intra poros glebæ inſinuatæ nedùm expellant aerem
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              ibi contentum, ſed etiam arenulas glebam conſtitu­
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              entes, quæ tantummodò ſe tangunt, & nullo alio vin­
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              culo, nec glutine nectuntur, facilè ab inuicem diſſo­
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              cient diſpergantque. </s>
              <s id="s.001662">porrò cùm ad aquæ
                <expan abbr="immiſſionẽ">immiſſionem</expan>
              ,
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              & aeris expreſſionem, atque aſcenſum neceſſariò mo­
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              tus, & agitatio ipſius aquæ
                <expan abbr="cõſequatur">conſequatur</expan>
              , hic verò mo­
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              tus abſque impetu eſſe non poſſit, qui cùm vim cuiuſ­
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              cumque ponderis finiti ſuperet, vt demonſtrauimus,
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              facilè poterit exiguas illas arenulas diſſolutas nedum
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              lateraliter, ſed etiam ſursùm aliquantiſper impelle­
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              re, & hinc oritur turbida quædam nebula, quæ pro­
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              pè glebam demerſam conſpicitur diù
                <expan abbr="perſeuerãs">perſeuerans</expan>
              . </s>
              <s id="s.001663">Ex
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              vniuerſa hac naturali operatione nemo ſanæ mentis
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              eliciet aquæ particulas continuo, & vago motu agi­
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              tari naturali inſtinctu, & ab hoc principio produci
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              glebæ diſſolutionem, diſperſionemque arenularum
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              eius, & feruoris, qui in aqua tunc temporis conſpici­
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              tur, nam hæc omnia habent ſuam cauſam
                <expan abbr="neceſſariã">neceſſariam</expan>
              ,
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              nempè aquæ grauitatem, quæ poteſt, & debet
                <expan abbr="nedũ">nedum</expan>
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              expellere ſursùm leues aeris particulas intra glebæ
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              poroſitates contentas, ſed etiam diſſoluere, & diſper­
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              gere ſuo impetu puluerulentas glebæ particulas per
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              ipſammet aquam. </s>
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