Casati, Paolo, De igne dissertationes physicae, 1686

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              <pb o="129" file="0141" n="141" rhead="De Calore."/>
            ſcat quidem, ſed concretum maneat. </s>
            <s xml:id="echoid-s3931" xml:space="preserve">Mihi certè dubium non eſt,
              <lb/>
            an flatu impulſa corpuſcula, quæcunque illa ſint, faciliùs pe-
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            netrent; </s>
            <s xml:id="echoid-s3932" xml:space="preserve">iter enim habenti tempeſtate cœli humidiſſimâ & </s>
            <s xml:id="echoid-s3933" xml:space="preserve">nebu-
              <lb/>
            loſâ, Borrhapeliote continuo totum ſolidum diem flante, conti-
              <lb/>
            git penulam quidem omnino madidam in hoſpitium referre ſiccis
              <lb/>
            interioribus veſtibus; </s>
            <s xml:id="echoid-s3934" xml:space="preserve">ſed qua parte ventus humidiſſimam nebulam
              <lb/>
            impellebat in ſiniſtrum latus, nec penula, nèc interiores veſtes
              <lb/>
            reſiſtere valuerunt, quin humor ad intimam vſque ſubuculam
              <lb/>
            penetraret. </s>
            <s xml:id="echoid-s3935" xml:space="preserve">Cum igitur igniculi ſua tenuitate ſuperent humorem
              <lb/>
            quencunque, haud dubium, quin illi ſe faciliùs inſinuent in an-
              <lb/>
            guſtiſſimos quoſque meatus, etiam vitri, quod cœteroqui per-
              <lb/>
            meare nequeunt ſubtiliſſimi ſpiritus Chymicè extillati. </s>
            <s xml:id="echoid-s3936" xml:space="preserve">Hinc alia
              <lb/>
            præ alijs vaſa diutiùs igni reſiſtunt, prout impetum ferre va-
              <lb/>
            lent irrumpentium, ſeſeque agitantium magnâ vi igniculorum:
              <lb/>
            </s>
            <s xml:id="echoid-s3937" xml:space="preserve">propterea in ignis adminiſtratione certi gradus ſeruandi ſunt, vt
              <lb/>
            ſenſim illabentes igniculi viam ſequentibus pateſaciant, ne fortè
              <lb/>
            plurimis initio irruentibus, & </s>
            <s xml:id="echoid-s3938" xml:space="preserve">nimiâ vi particulas vaſis concu-
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            tientibus, vaſa ipſa dirumpantur: </s>
            <s xml:id="echoid-s3939" xml:space="preserve">ideò vitrea vaſa viuo igni ex-
              <lb/>
            poſita obducuntur luto, quod *Philoſophicum*, ſeu *Sapientiæ* vo-
              <lb/>
            cant; </s>
            <s xml:id="echoid-s3940" xml:space="preserve">neque enim hoc tam facilè, ac vitrum, diſſilit, & </s>
            <s xml:id="echoid-s3941" xml:space="preserve">per-
              <lb/>
            meantium igniculorum impetum infringit, ne tantâ vi in vitrum
              <lb/>
            irruant, illudque, quaſi adacti cuneoli, diffindant. </s>
            <s xml:id="echoid-s3942" xml:space="preserve">Sic in vi-
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            tream, aut ex Sinenſi cretâ (Porcellanam dicimus) ſcutellam
              <lb/>
            iniecturi calidiorem potionem, priùs calentem fumum inuerſâ
              <lb/>
            ſcutellâ excipiunt, vt ſenſim illa incaleſcat, poſtmodum liquo-
              <lb/>
            rem ipſum calidiorem infundunt, citrà metum, ne ſcutella dif-
              <lb/>
            fringatur.</s>
            <s xml:id="echoid-s3943" xml:space="preserve"/>
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            <s xml:id="echoid-s3944" xml:space="preserve">Dand. </s>
            <s xml:id="echoid-s3945" xml:space="preserve">Nunquam ſatis laudata ſolertia ingenioſiſſimorum Aca-
              <lb/>
            demicorum Florentinorum igniculis peruium eſſe vitrum depre-
              <lb/>
            hendit, cùm craſſiuſculæ laminæ vitreæ in hyperbolam aut para-
              <lb/>
            bolam (aut etiam anomalè) inflexæ colligatas intentâ chorda
              <lb/>
            extremitates ad ſe primùm accedere obſeruârunt (nam & </s>
            <s xml:id="echoid-s3946" xml:space="preserve">chor-
              <lb/>
            da flacceſcens grauiorem ſonum reddebat) quando, ad curuatu-
              <lb/>
            ræ verticem applicato ardenti carbone, igniculi conuexam tan-
              <lb/>
            tùm vitri ſuperſiciem dilatantes nondum illud ita permeârunt, vt
              <lb/>
            ad concauam ſuperficiem venerint; </s>
            <s xml:id="echoid-s3947" xml:space="preserve">ac proinde introrſum reflectunt
              <lb/>
            ipſas extremitates, quæ deinde diducuntur, cum igniculi ad con-
              <lb/>
            cauam ſuperficiem penetrauerint, eiuſque particulas dilatauerint;</s>
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