Bion, Nicolas, Traité de la construction et principaux usages des instruments de mathématique, 1723

Table of Notes

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            <s xml:id="echoid-s5599" xml:space="preserve">
              <pb o="173" file="187" n="187" rhead="POUR LES FORTIFICATIONS. Liv. IV. Ch. VIII."/>
            vert, & </s>
            <s xml:id="echoid-s5600" xml:space="preserve">ſe rendre maître de la Place en peu de tems.</s>
            <s xml:id="echoid-s5601" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5602" xml:space="preserve">Il s'enſuit de cette Maxime, que l'Angle flanqué, ou l'Angle
              <lb/>
            fait des deux faces du Baſtion trop aigu eſt défectueux, parce que
              <lb/>
            ſa pointe peut être facilement émouſſée ou rompuë par le canon
              <lb/>
            des Aſſiegeans, & </s>
            <s xml:id="echoid-s5603" xml:space="preserve">qu'enſuite le Mineur y peut travailler en ſûreté,
              <lb/>
            pour en agrandir la Breche.</s>
            <s xml:id="echoid-s5604" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5605" xml:space="preserve">C'eſt encore un pareil défaut d'arrondir la pointe des Baſtions,
              <lb/>
            par la même raiſon.</s>
            <s xml:id="echoid-s5606" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5607" xml:space="preserve">La ſeconde eſt, que la force ſoit, autant qu'il eſt poſſible, éga-
              <lb/>
            lement diſtribuée par tout; </s>
            <s xml:id="echoid-s5608" xml:space="preserve">parce que, s'il y a quelque endroit plus
              <lb/>
            foible, ce ſera par là que l'Ennemi l'attaquera: </s>
            <s xml:id="echoid-s5609" xml:space="preserve">ceſt pourquoi ſi
              <lb/>
            par la nature du terrain, un côté ſe trouve plus foible que les au-
              <lb/>
            tres, on y ajoûte quelque ouvrage, pour augmenter ſa force, en
              <lb/>
            multipliant ſa défenſe.</s>
            <s xml:id="echoid-s5610" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5611" xml:space="preserve">Latroiſiéme eſt, que les parties flanquées ne ſoient éloignées de
              <lb/>
            celles qui les flanquent, que de la portée du Mouſquet; </s>
            <s xml:id="echoid-s5612" xml:space="preserve">c'eſt pour-
              <lb/>
            quoi la ligne de défenſe, ou la diſtance de la pointe du Baſtion aux
              <lb/>
            flancs des Baſtions voiſins, ne doit guéres exceder 125 toiſes, qui
              <lb/>
            eſt la portée ordinaire des Mouſquets chargez à la hâte, comme
              <lb/>
            ſont ceux des Soldats dans un Siege.</s>
            <s xml:id="echoid-s5613" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5614" xml:space="preserve">La quatriéme Maxime eſt, que les flancs des Baſtions ſoient aſ-
              <lb/>
            ſez grands pour contenir du moins trente Mouſquetaires de front,
              <lb/>
            & </s>
            <s xml:id="echoid-s5615" xml:space="preserve">quatre ou cinq pieces de canon montées ſur leurs affuts, afin de
              <lb/>
            bien défendre toute la face du Baſtion, qui pourroit être attaquée
              <lb/>
            par l'ennemi: </s>
            <s xml:id="echoid-s5616" xml:space="preserve">& </s>
            <s xml:id="echoid-s5617" xml:space="preserve">comme la principale défenſe ſe tire des flancs, il
              <lb/>
            eſt plus à propos qu'ils ſoient perpendiculaires ſur la ligne de dé-
              <lb/>
            fenſe, que de toute autre ſituation. </s>
            <s xml:id="echoid-s5618" xml:space="preserve">Cette méthode a été enſeignée
              <lb/>
            par M. </s>
            <s xml:id="echoid-s5619" xml:space="preserve">le Comte de Pagan, & </s>
            <s xml:id="echoid-s5620" xml:space="preserve">ſuivie par les plus habiles Ingenieurs
              <lb/>
            qui ont paru depuis, & </s>
            <s xml:id="echoid-s5621" xml:space="preserve">particulierement par M. </s>
            <s xml:id="echoid-s5622" xml:space="preserve">le Marêchal de
              <lb/>
            Vauban, qui par ſes ſignalez ſervices, a merité l'eſtime de tous les
              <lb/>
            Gens de Guerre & </s>
            <s xml:id="echoid-s5623" xml:space="preserve">habiles Ingenieurs de ſon tems.</s>
            <s xml:id="echoid-s5624" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5625" xml:space="preserve">La cinquiéme eſt, que la Fortereſſe ne ſoit commandée d'aucun
              <lb/>
            endroit, qui ſoit à la portée des armes à feu, qui ſont le mouſquet
              <lb/>
            & </s>
            <s xml:id="echoid-s5626" xml:space="preserve">le canon; </s>
            <s xml:id="echoid-s5627" xml:space="preserve">car au contraire, elle doit commander ſur tous les
              <lb/>
            lieux d'alentour.</s>
            <s xml:id="echoid-s5628" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5629" xml:space="preserve">La ſixiéme eſt, que les ouvrages les plus proches du centre de la
              <lb/>
            Place, ſoient plus élevez & </s>
            <s xml:id="echoid-s5630" xml:space="preserve">commandent à ceux qui en ſont plus
              <lb/>
            éloignez, afin que ſi l'Ennemi vient à ſe rendre maître de quelque
              <lb/>
            partie des dehors, ou de quelque ouvrage éloigné, il puiſſe en être
              <lb/>
            repouſſé par ceux qui détendent le Corps de la Place.</s>
            <s xml:id="echoid-s5631" xml:space="preserve"/>
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