Casati, Paolo, De igne dissertationes physicae, 1686

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            <s xml:id="echoid-s11466" xml:space="preserve">
              <pb o="380" file="0392" n="392" rhead="Diſſertatio Decimatertia"/>
            directionem propellentibus, ac voluentibus, temperetur, atque
              <lb/>
            alium colorem oculo exhibeat ſuperſicies obliquè viſa, ac ſi dire-
              <lb/>
            ctè aſpiceretur.</s>
            <s xml:id="echoid-s11467" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s11468" xml:space="preserve">Maur. </s>
            <s xml:id="echoid-s11469" xml:space="preserve">Profectò ad coloris ſpeciem pertinere ſuperſiciei aſperi-
              <lb/>
            tatem, manifeſtum faciunt argentea vaſa; </s>
            <s xml:id="echoid-s11470" xml:space="preserve">qua enim parte poli-
              <lb/>
            ta ac læuigata eſt eorum facies, obſcurum quid, & </s>
            <s xml:id="echoid-s11471" xml:space="preserve">ad ni-
              <lb/>
            grorem accedens repræſentat; </s>
            <s xml:id="echoid-s11472" xml:space="preserve">qua verò parte rudis eſt & </s>
            <s xml:id="echoid-s11473" xml:space="preserve">aſpera
              <lb/>
            facies, modò ſordibus careat, albeſcit: </s>
            <s xml:id="echoid-s11474" xml:space="preserve">tam multæ ſiquidem
              <lb/>
            ſuperſicies aſperitatem conſtituentes, variè inclinatæ, dum ſibi
              <lb/>
            proximos globulos impactos, pro ſua quæque inclinatione, re-
              <lb/>
            flectunt, alij globuli multipliciter hinc & </s>
            <s xml:id="echoid-s11475" xml:space="preserve">hinc pulſati validiùs
              <lb/>
            propellunt conſequentes globulos, & </s>
            <s xml:id="echoid-s11476" xml:space="preserve">luci affinem colorem, ſci-
              <lb/>
            licet albedinem, referunt. </s>
            <s xml:id="echoid-s11477" xml:space="preserve">Præterea ſalebræ illæ, ac prominulæ
              <lb/>
            particulę, quas in aſperâ aliquâ ſuperſicie intuemur, obliquè aſ-
              <lb/>
            picienti occultant particulas depreſſiores, à quibus reflexa lux
              <lb/>
            ad oculum non venit, ſaltem integra: </s>
            <s xml:id="echoid-s11478" xml:space="preserve">vt in ſericis, aut laneis
              <lb/>
            pannis vario ſtamine contextis obſeruamus, quorum color va-
              <lb/>
            rius apparet ex variâ poſitione, prout illos obliquè aut directè
              <lb/>
            propoſitos intuemur. </s>
            <s xml:id="echoid-s11479" xml:space="preserve">Sed & </s>
            <s xml:id="echoid-s11480" xml:space="preserve">hoc addo, quod non eadem vide-
              <lb/>
            tur eſſe lucis efficacitas, quæ Spiritibus, quæ Salibus, quę Sul-
              <lb/>
            phuribus tribuenda eſt; </s>
            <s xml:id="echoid-s11481" xml:space="preserve">nam fortaſſe infirmior eſt in Salibus mo-
              <lb/>
            tus porrectionis, quàm in Spiritibus, Sulphuribus medio loco
              <lb/>
            ſe habentibus: </s>
            <s xml:id="echoid-s11482" xml:space="preserve">Ex horum autem complicatione multiplici, pro
              <lb/>
            diuerſâ corporum naturâ, quàm varium recipiunt impulſionis & </s>
            <s xml:id="echoid-s11483" xml:space="preserve">
              <lb/>
            conuerſionis modum globuli ætherei in eos impacti? </s>
            <s xml:id="echoid-s11484" xml:space="preserve">Hinc ex
              <lb/>
            commiſtione ſecundùm varias Rationes corporum alio atque alio
              <lb/>
            colore imbutorum Infectores atque Pictores tam varios gradus
              <lb/>
            ſuis pariter nominibus diſtinctos noſtra hac ætate, in Galliâ prę-
              <lb/>
            ſertim atque in Angliâ, excogitârunt: </s>
            <s xml:id="echoid-s11485" xml:space="preserve">id quod Salium atque
              <lb/>
            Sulphurum commiſtioni adſcribendum eſt. </s>
            <s xml:id="echoid-s11486" xml:space="preserve">Cuius rei argumen-
              <lb/>
            tum non leue ducere poſſumus ex Tincturâ, quæ cum Sale Tar-
              <lb/>
            tari educitur ex Sulphure communi; </s>
            <s xml:id="echoid-s11487" xml:space="preserve">hæc enim eſt inſigniter ru-
              <lb/>
            bra; </s>
            <s xml:id="echoid-s11488" xml:space="preserve">ſed præcipitatione cum aceto deſtillato abit in puluerem al-
              <lb/>
            bicantem, qui à colore *Lac Sulphuris* vocatur. </s>
            <s xml:id="echoid-s11489" xml:space="preserve">Hic autem pul-
              <lb/>
            uis iterum ſolutus in aquâ, admiſto Sale Alkali cuiuſdam
              <lb/>
            plantæ, priſtinum acquirit Sulphuris colorem. </s>
            <s xml:id="echoid-s11490" xml:space="preserve">Ex quibus
              <lb/>
            patere videtur, non Sulphuri tantummodo, vt non </s>
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