Bacon, Francis, Sylva sylvarum : or, a natural history in ten centuries

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          <p>
            <s xml:id="echoid-s1700" xml:space="preserve">
              <pb o="33" file="0067" n="67" rhead="Century II."/>
            but runneth in ſilence, if it be of any depth; </s>
            <s xml:id="echoid-s1701" xml:space="preserve">but the very Stream upon Shal-
              <lb/>
            lows, or Gravel, or Pebble, will be heard. </s>
            <s xml:id="echoid-s1702" xml:space="preserve">And Waters, when they beat up-
              <lb/>
            on the Shore, or are ſtraitned, (as in the falls of Bridges) or are daſhed againſt
              <lb/>
            themſelves by Winds, give a roaring noiſe. </s>
            <s xml:id="echoid-s1703" xml:space="preserve">Any peece of Timber, or hard
              <lb/>
            Body, being thruſt for wards by another Body continguous, without knock-
              <lb/>
            ing giveth no noiſe. </s>
            <s xml:id="echoid-s1704" xml:space="preserve">And ſo Bodies in weighing, one upon another, though
              <lb/>
            the upper Body preſs the lower Body down, make no noiſe. </s>
            <s xml:id="echoid-s1705" xml:space="preserve">So the motion
              <lb/>
            of the Minute parts of any ſolid Body, (which is the principal cauſe of violent
              <lb/>
            Motion, though unobſerved) paſſeth without ſound: </s>
            <s xml:id="echoid-s1706" xml:space="preserve">For that ſound, that is
              <lb/>
            heard ſometimes, is produced onely by the breaking of the Air, and not by
              <lb/>
            the impulſion of the parts. </s>
            <s xml:id="echoid-s1707" xml:space="preserve">So it is manifeſt, that where the anterior Body
              <lb/>
            giveth way as ſaſt as the poſterior cometh on, it maketh no noiſe, be the
              <lb/>
            motion never ſo great or ſwift.</s>
            <s xml:id="echoid-s1708" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1709" xml:space="preserve">Air open and at large, maketh no noiſe, except it be ſharply percuſſed;
              <lb/>
            </s>
            <s xml:id="echoid-s1710" xml:space="preserve">
              <note position="right" xlink:label="note-0067-01" xlink:href="note-0067-01a" xml:space="preserve">116.</note>
            as in the ſound of a ſtring, where Air is purcuſſed by a hard and ſtiff Body, and
              <lb/>
            with a ſharp looſe: </s>
            <s xml:id="echoid-s1711" xml:space="preserve">For it the ſtring be not ſtrained, it maketh no noiſe; </s>
            <s xml:id="echoid-s1712" xml:space="preserve">but
              <lb/>
            where the Air is pent and ſtraitned, there breath or other blowing (which
              <lb/>
            carry but a gentle percuſſion) ſuffice to create ſound; </s>
            <s xml:id="echoid-s1713" xml:space="preserve">as in Pipes and Wind
              <lb/>
            Inſtruments. </s>
            <s xml:id="echoid-s1714" xml:space="preserve">But then you muſt note, that in Recorders which go with a
              <lb/>
            gentle breath, the Concave of the Pipe (were it not for the Fipple that ſtrait-
              <lb/>
            neth the Air much more then the ſimple Concave) would yield no ſound.
              <lb/>
            </s>
            <s xml:id="echoid-s1715" xml:space="preserve">For, as for other Wind-Inſtruments, they require a forcible breath, as Trum-
              <lb/>
            pets, Cornets, Hunters, Horns, & </s>
            <s xml:id="echoid-s1716" xml:space="preserve">c. </s>
            <s xml:id="echoid-s1717" xml:space="preserve">Which appeareth by the blown Cheeks of
              <lb/>
            him that windeth them. </s>
            <s xml:id="echoid-s1718" xml:space="preserve">Organs alſo are blown with a ſtrong wind by the
              <lb/>
            Bellows. </s>
            <s xml:id="echoid-s1719" xml:space="preserve">And note again, that ſome kinde of Wind-Inſtruments are blown
              <lb/>
            at a ſmall hole in the ſide, which ſtraineth the breath at the firſt entrance; </s>
            <s xml:id="echoid-s1720" xml:space="preserve">
              <lb/>
            the rather, in reſpect of their traverſe, and ſtop above the hole which per-
              <lb/>
            formeth the Fipples part; </s>
            <s xml:id="echoid-s1721" xml:space="preserve">as it is ſeen in Flutes and Fifes, which will not give
              <lb/>
            ſound by a blaſt at the end, as Recorders do, &</s>
            <s xml:id="echoid-s1722" xml:space="preserve">c. </s>
            <s xml:id="echoid-s1723" xml:space="preserve">Likewiſe in all Whiſtling,
              <lb/>
            you contract the Mouth; </s>
            <s xml:id="echoid-s1724" xml:space="preserve">and to make it more ſharp, Men ſometimes uſe their
              <lb/>
            finger.</s>
            <s xml:id="echoid-s1725" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1726" xml:space="preserve">But in open Air, if you throw a Stone or a Dart, they give no ſound:
              <lb/>
            </s>
            <s xml:id="echoid-s1727" xml:space="preserve">
              <note position="right" xlink:label="note-0067-02" xlink:href="note-0067-02a" xml:space="preserve">117.</note>
            No more do Bullets, except they happen to be a little hollowed in the caſt-
              <lb/>
            ing; </s>
            <s xml:id="echoid-s1728" xml:space="preserve">which hollowneſs penneth the Air: </s>
            <s xml:id="echoid-s1729" xml:space="preserve">Nor yet Arrows, except they be
              <lb/>
            ruffled in their Feathers, which like wiſe penneth the Air. </s>
            <s xml:id="echoid-s1730" xml:space="preserve">As for ſmall Whi
              <lb/>
            ſtles or Shepherds Oaten-Pipes, they give a ſound, becauſe of their extream
              <lb/>
            ſlenderneſs, whereby the Air is more pent than in a wider Pipe. </s>
            <s xml:id="echoid-s1731" xml:space="preserve">Again, the
              <lb/>
            voices of Men and Living Creatures, paſs through the Throat, which pen.
              <lb/>
            </s>
            <s xml:id="echoid-s1732" xml:space="preserve">neth the breath. </s>
            <s xml:id="echoid-s1733" xml:space="preserve">As for the Jews-Harp, it is a ſharp percuſſion, and beſides hath
              <lb/>
            the vantage of penning the Air in the Mouth.</s>
            <s xml:id="echoid-s1734" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1735" xml:space="preserve">Solid Bodies, if they be very ſoftly percuſſed, give no ſound; </s>
            <s xml:id="echoid-s1736" xml:space="preserve">as when a
              <lb/>
              <note position="right" xlink:label="note-0067-03" xlink:href="note-0067-03a" xml:space="preserve">118.</note>
            Man treadeth very ſoftly upon Boards. </s>
            <s xml:id="echoid-s1737" xml:space="preserve">So Cheſts or Doors in fair weather,
              <lb/>
            when they open eaſily, give no ſound. </s>
            <s xml:id="echoid-s1738" xml:space="preserve">And Cart-wheels ſqueek not when
              <lb/>
            they are liquored.</s>
            <s xml:id="echoid-s1739" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1740" xml:space="preserve">The Flame of Tapers or Candles, though it be a ſwift motion and breaketh
              <lb/>
              <note position="right" xlink:label="note-0067-04" xlink:href="note-0067-04a" xml:space="preserve">119.</note>
            the Air, yet paſſeth without ſound. </s>
            <s xml:id="echoid-s1741" xml:space="preserve">Air in Ovens, though (no doubt) it doth
              <lb/>
            (as it were) boil, and dilate it ſelf, and is repercuſſed, yet it is without noiſe.</s>
            <s xml:id="echoid-s1742" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1743" xml:space="preserve">Flame percuſſed by Air, giveth a noiſe; </s>
            <s xml:id="echoid-s1744" xml:space="preserve">As in blowing of the Fire by Bel-
              <lb/>
            lows, greater than if the Bellows ſhould blow upon the Air it ſelf. </s>
            <s xml:id="echoid-s1745" xml:space="preserve">And ſo
              <lb/>
            likewiſe Flame percuſſing the Air ſtrongly (as when Flame ſuddenly taketh
              <lb/>
            and openeth) giveth a noiſe: </s>
            <s xml:id="echoid-s1746" xml:space="preserve">So great Flames, whiles the one impelleth the
              <lb/>
            other, give a bellowing ſouud.</s>
            <s xml:id="echoid-s1747" xml:space="preserve"/>
          </p>
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