Lorini, Buonaiuto , Le fortificationi, old version (312 p.), 1609

Table of figures

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              <s>
                <pb xlink:href="031/01/112.jpg" pagenum="104"/>
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              ſtrato, cioè, in quello iſtante quando la palla, & il vapore eſee dalla bocca, perche vrtando eſſo vapo­
                <lb/>
              re nell'aria, laquale ſe gli oppone, & ritrouandoſi la canna del pezzo mobile ſopra le ſue ruote, vie­
                <lb/>
              ne per tale oppoſitione vrtata, & fatta ritirare. </s>
              <s>Perche la poluere, ouero per dir meglio il ſalnitro,
                <lb/>
              che col mezo del fuoco ſi conuerte in aria, che è la ſua a
                <gap/>
              ima, multiplicandoſi ogni parte, per eſſem­
                <lb/>
                <arrow.to.target n="marg245"/>
              pio in mille, da che ne cauſa quella marauiglioſa
                <expan abbr="violēza">violenza</expan>
              , che ſi vede, ſtante li due elementi coſi tra lo
                <lb/>
              ro contrari, cioè l'humidità del ſalnitro, & la ſecchezza del fuoco, ilqual fa lo ſteſſo eſietto, che fanno
                <lb/>
              i fulgori celeſti; e però tanto maggiore o minore ſarà la ritirata, quanto che la canna del pezzo ſarà
                <lb/>
              ricca, o pouera di metallo, venendo aſſai trattenuta daila ſua grauezza. </s>
              <s>Quanto poi al terzo queſito,
                <lb/>
              che è di ſapere il tempo, che
                <expan abbr="cōſuma">conſuma</expan>
              la palla nell'vſeire dalla bocca del pezzo, & nell'arriuare al ſegno
                <lb/>
              doue dee ferire, ilquale ſupporremo ſia di paſſi cinquecento, dico
                <gap/>
              ſſe
                <gap/>
              mi certificato con l'eſperien­
                <lb/>
              za, che ſtando lontano dal pezzo coſi da vna parte in detta lontananza, & fatto dare il fnoco, e ſubito
                <lb/>
              viſto il fumo vſcire dalla bocca di eſſo pezzo, contai ſino al numero di ſei, & al fine vidi la palla fe­
                <lb/>
              rire in terra, & inſieme ſentij il tuono; e perche il modo del contare può eſſere diuerſo, ſi dee però fa­
                <lb/>
              re con lo ſteſſo tempo, che batte il polſo non alterato della mano, con ilquale ſi hauerà il giuſto tem­
                <lb/>
              po, che ella deſidera ſapere. </s>
              <s>Reſta per vltimo il dichiararle la proportione del tempo, che ſi ritroua
                <lb/>
              tra la velocità del corpo della palla di ferro vſ
                <gap/>
              ita fuori della bocca del pezzo, alla velocità del corſo
                <lb/>
              Solare; Di queſta materia, io non ne poſſo parlare per prattica, ne accertarla di alcuna verità, ma per
                <lb/>
              teorica con vn certo appreſſamento io le diro l'opinion mia, rimettendomi alla relatione di qu<17>lli,
                <lb/>
                <arrow.to.target n="marg246"/>
              che l'anderanno a miſurare, e però per vno abozzamento di quello, che le poſſo dire, ella s'imagini
                <lb/>
              due monti fatti artificiati d'vna vguale altezza, & larghezza, che ſieno ſopra vno ſteſſo piano, & che
                <lb/>
              l'vn di quelli ſia di miglio, & l'altro ſia fatto di quelli palloni da vento, con che ſi giuoca, & la propor
                <lb/>
              tione, che ſarà dal numero de grani del miglio a quello delli palloni da vento, ſarà tra il corſo delle
                <lb/>
              palle tratte dall'artiglierie, alla velocità del corſo del Sole, cioè, il Sole farà in vn tempo ſteſſo il nume
                <lb/>
              ro delle miglia, che ſono i grani del miglio, & le palle dell'artiglierie il numero delli palloni detti.
                <lb/>
              </s>
              <s>E per venire a particolari di quella ragione, che le poſſo aſſegnare, dico, che dall'oſſeruanza del moto
                <lb/>
              del Sole, & da quello del corſo delle palle douemo procurare di ſapere prima la velocità del corſo del
                <lb/>
              Sole, e ciò ſapremo con l'oſſeruanza del tempo, che corre la mattina nello ſcoprirſi ſopra al noſtro
                <lb/>
              Orizonte, & oſſeruato per via de numeri contati con la proportione del battere del polſo non altera­
                <lb/>
              to, cioè nello ſpuntare eſſo ſuo corpo, ſino allo ſcoprirſi tutto, ſtà il tempo che ſi conta ſino a cento ſet­
                <lb/>
                <arrow.to.target n="marg247"/>
              tanta, & eſſendo eſſo corpo Solare cento ſeſſanta volte maggiore di queſto globo terreſtre, ilquale
                <lb/>
              per diametro dicono eſſere trentaun mila miglia, e cinquecento, onde per trouare la grandezza del
                <lb/>
              diametro del corpo Solare multiplicherremo 160. via 31500. e trouerremo fare cinque milioni, &
                <lb/>
              cento quaranta migliaia di miglia, che tanto è il diametro del Sole. </s>
              <s>Hora vedaſi la proportione, che
                <lb/>
              ſi ritroua tra il tempo, che conſumma la palla dell'artiglieria per lo ſpatio ſolo di mezo miglio, ch'è
                <lb/>
              nel contare per inſino al numero ſei, con quello del Sole, ch'è nel contare ſino a cento ſettanta volte,
                <lb/>
              che fa il viaggio di miglia cinque milioni, & cento quaranta migliaia, e ciò ſaperemo per la regola
                <lb/>
              del tre, commune a chi intende l'aritmetica. </s>
              <s>Ma perche queſto noſtro diſcorſo è del tutto inutile, ſi
                <lb/>
              che per non infaſtidire me, ne lei, lo laſcieremo per attendere a coſe di maggior frutto. </s>
              <s>CO. </s>
              <s>Ben
                <lb/>
              mi vò del continuo certificando, non eſſere dalla Natura fatta alcuna coſa, che non venga riconoſciu
                <lb/>
              ta, e dominata dal giudicio dell'huomo con le cagioni, & effetti ſuoi, maſſime co'l mezo delle mate­
                <lb/>
              matiche ſcienze, doue ſi và così bene imitando, e proportionando tutte le coſe, che chiaramente ven
                <lb/>
              gono inteſe dal noſtro intelletto, eſſendo però queſto priuilegio, e gratia conceſſa da ſua Diuina Mae
                <lb/>
              ſtà all'huomo, come ſuperiore a tutte l'altre creature; e però dee non ſolo intendere, ma bene opera­
                <lb/>
              re, e paſſare di perfettione eſſe creature. </s>
              <s>AV. </s>
              <s>Se con retto giudicio noi cercaſſimo dalle coſe natu­
                <lb/>
              rali trarre quel vero ritratto, nel quale noi dobbiamo riguardare, per conoſcere quanto fia grande
                <lb/>
              l'obligo, che ha l'huomo nell'intendere per operar bene; per certo pochi ſarebbono quegli, che da
                <lb/>
              loro ſteſſi non ſi riconoſceſſero per troppo vili, viuendo infruttuoſamente. </s>
              <s>Ne meno poi all'incon­
                <lb/>
              tro ſi dee inſuperbire nel pretender di ſapere aſſai, ſtante che anco la natura ha conceſſo a' più vili
                <lb/>
              animaletti tanto ſapere, che ne hanno inſegnato molti eſſercitij, e maſſime quelli, che ſono à noſtro
                <lb/>
              beneficio, come ſi vede dalle Api, che fanno il mele, il verme, che fa la ſeta, & il ragno nel far le re­
                <lb/>
              ti: li quali pure non ſappiamo imitare; poi che dalle Api, ouero pecchie, non ſi può negare, che non
                <lb/>
              ſi ſia imparato, non ſolo il buono ordine del gouerno delle bene ordinate famiglie, ma etiandio del­
                <lb/>
              le Republiche, e come ſi deon diſpenſare gli offici, e quanto che gli in feriori deono obedire, e riue­
                <lb/>
              rire i ſuoi ſuperiori, e maſſime il ſuo Re, o Prencipe. </s>
              <s>E però dal loro eſſercitìo ſi vede, e non ſenza
                <lb/>
              marauiglia, con quanta obidienza venga oſſeruata nell'andare alle ſue hore, e tempi a cercar tra mil­
                <lb/>
              le, e diuerſe qualità di fiori, e cauarne la occulta quinta eſſentia, & con quanta induſtria la portino
                <lb/>
              ſopra le ſottiliſſime lor gambe, ſi che le ali non venghino impedite a far il neceſſario viaggio. </s>
              <s>E quan­
                <lb/>
              to venga oſſeruata ne gli officij di quelle, che reſtano al gouerno delle loro habitationi, fabricate con
                <lb/>
              tanta arte, maſſime nel riceuer la materia, e quella riporre ne' propri luoghi, e poi fare il comparti-</s>
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