Bacon, Francis
,
Sylva sylvarum : or, a natural history in ten centuries
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34
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Natural Hiſtory;
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<
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<
s
xml:id
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xml:space
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">There is a conceit runneth abroad, that there ſhould be a White Powder,
<
lb
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<
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xlink:label
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note-0068-01
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xml:space
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">120.</
note
>
which will diſcharge a piece without noiſe, which is a dangerous experi-
<
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<
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71
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<
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number
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72
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<
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73
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ment, if it ſhould be true: </
s
>
<
s
xml:id
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echoid-s1749
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xml:space
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">For it may cauſe ſecret Murthers, but it ſeemeth
<
lb
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to me unpoſſible; </
s
>
<
s
xml:id
="
echoid-s1750
"
xml:space
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preserve
">for if the Air pent, be driven forth and ſtrike the Air open,
<
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/>
it will certainly make a noiſe. </
s
>
<
s
xml:id
="
echoid-s1751
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xml:space
="
preserve
">As for the White Powder, (if any ſuch
<
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/>
thing be that may extinguiſh or dead the noiſe) it is like to be a mixture
<
lb
/>
of Petre and Sulphure, without Coal. </
s
>
<
s
xml:id
="
echoid-s1752
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xml:space
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">For Petre alone will not take Fire.
<
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</
s
>
<
s
xml:id
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echoid-s1753
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xml:space
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">And if any Man think, that the ſound may be extinguiſhed or deaded, by
<
lb
/>
diſcharging the pent Air, before it cometh to the Mouth of the Peece, and
<
lb
/>
to the open Air, that is not probable; </
s
>
<
s
xml:id
="
echoid-s1754
"
xml:space
="
preserve
">for it will make more divided ſounds: </
s
>
<
s
xml:id
="
echoid-s1755
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xml:space
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">
<
lb
/>
As if you ſhould make a Croſs-barrel hollow, thorow the Barrel of a
<
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Peece, it may be it would give ſeveral ſounds, both at the Noſe and the
<
lb
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ſides. </
s
>
<
s
xml:id
="
echoid-s1756
"
xml:space
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">But I conceive, that if it were poſſible to bring to paſs, that there
<
lb
/>
ſhould be no Air pent at the Mouth of the Peece, the Bullet might flie
<
lb
/>
with ſmall or no noiſe. </
s
>
<
s
xml:id
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echoid-s1757
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xml:space
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">For firſt it is certain, there is no noiſe in the Per-
<
lb
/>
cuſſion of the Flame upon the Bullet. </
s
>
<
s
xml:id
="
echoid-s1758
"
xml:space
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preserve
">Next the Bullet, in piercing tho-
<
lb
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row the Air, maketh no noiſe, as hath been ſaid; </
s
>
<
s
xml:id
="
echoid-s1759
"
xml:space
="
preserve
">and then, if there be no
<
lb
/>
pent Air, that ſtriketh upon open Air, there is no cauſe of noiſe, and yet the
<
lb
/>
flying of the Bullet will not be ſtaid. </
s
>
<
s
xml:id
="
echoid-s1760
"
xml:space
="
preserve
">For that motion (as hath been oft
<
lb
/>
ſaid) is in the parts of the Bullet, and not in the Air. </
s
>
<
s
xml:id
="
echoid-s1761
"
xml:space
="
preserve
">So as tryal muſt be
<
lb
/>
made by taking ſome ſmall Concave of Minal, no more than you mean to
<
lb
/>
fill with Powder, and laying the Bullet in the Mouth of it half out in the
<
lb
/>
<
handwritten
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number
="
71
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<
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number
="
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<
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open Air.</
s
>
<
s
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</
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<
p
>
<
s
xml:id
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echoid-s1763
"
xml:space
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">I heard it affirmed by a Man that was a great dealer in Secrets, but he
<
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/>
<
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position
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note-0068-02
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xml:space
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">121.</
note
>
was but vain; </
s
>
<
s
xml:id
="
echoid-s1764
"
xml:space
="
preserve
">That there was a Conſpiracy (which himſelf hindred) to have
<
lb
/>
killed Queen Mary, Siſter to Queen Elizabeth, by a Burning-Glaß, when ſhe
<
lb
/>
walked in St. </
s
>
<
s
xml:id
="
echoid-s1765
"
xml:space
="
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">James Park, from the Leads of the Houſe. </
s
>
<
s
xml:id
="
echoid-s1766
"
xml:space
="
preserve
">But thus much, no
<
lb
/>
doubt, is true, That if Burning-Glaſſes could be brought to a great ſtrength,
<
lb
/>
(as they talk generally of Burning-Glaſſes, that are able to burn a Navy) the
<
lb
/>
Percuſſion of the Air alone, by ſuch a Burning-Glaß, would make no
<
lb
/>
noiſe; </
s
>
<
s
xml:id
="
echoid-s1767
"
xml:space
="
preserve
">no more than is found in Corruſcations, and Lighinings without
<
lb
/>
T
<
unsure
/>
hunders.</
s
>
<
s
xml:id
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xml:space
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"/>
</
p
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<
p
>
<
s
xml:id
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echoid-s1769
"
xml:space
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">I ſuppoſe that Impreßion of the Air with Sounds, asketh a time to be con-
<
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<
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xml:space
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">122.</
note
>
veighed to the Senſe, as well as the Impreßion of Species viſible, or elſe they will
<
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not be heard. </
s
>
<
s
xml:id
="
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"
xml:space
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">And thereſore, as the Bullet moveth ſo ſwiſt, that it is inviſible,
<
lb
/>
ſo the ſame ſwiftneſs of motion maketh it inaudible; </
s
>
<
s
xml:id
="
echoid-s1771
"
xml:space
="
preserve
">for we ſee that the ap-
<
lb
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prehenſion of the Eye, is quicker then that of the Ear.</
s
>
<
s
xml:id
="
echoid-s1772
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xml:space
="
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"/>
</
p
>
<
p
>
<
s
xml:id
="
echoid-s1773
"
xml:space
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">All Eruptions of Air, though fmall and ſlight, give an entity of ſound,
<
lb
/>
<
note
position
="
left
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xlink:label
="
note-0068-04
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xlink:href
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note-0068-04a
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xml:space
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">123.</
note
>
which we call Crackling, Puffing, Spiting, &</
s
>
<
s
xml:id
="
echoid-s1774
"
xml:space
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">c. </
s
>
<
s
xml:id
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echoid-s1775
"
xml:space
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">As in Bay ſalt, and Bay-leaves
<
lb
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caſt into the fire; </
s
>
<
s
xml:id
="
echoid-s1776
"
xml:space
="
preserve
">ſo in Cheſnuts, when they leap forth of the Aſhes, ſo in
<
lb
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green wood laid upon the fire, eſpecially Roots; </
s
>
<
s
xml:id
="
echoid-s1777
"
xml:space
="
preserve
">ſo in Candles that ſpit
<
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flame, if they be wet; </
s
>
<
s
xml:id
="
echoid-s1778
"
xml:space
="
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">ſoin Raſping, Sneezing, &</
s
>
<
s
xml:id
="
echoid-s1779
"
xml:space
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">c. </
s
>
<
s
xml:id
="
echoid-s1780
"
xml:space
="
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">Soin a R oſe leaf gather-
<
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ed together into the faſhion of a Purſe, and broken upon the Forehead, or
<
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Back of the Hand, as Children uſe.</
s
>
<
s
xml:id
="
echoid-s1781
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xml:space
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"/>
</
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<
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>
<
s
xml:id
="
echoid-s1782
"
xml:space
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">THe cauſe given of Sound, that it ſhould be an Eliſion of the Air (where-
<
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/>
<
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xlink:label
="
note-0068-05
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="
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xml:space
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">124.</
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>
by, if they mean any thing, they mean Cutting or Dividing, or elſe an
<
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<
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position
="
left
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xlink:label
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note-0068-06
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xml:space
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">Experiments
<
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in Con ſort,
<
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touching
<
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Production,
<
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Conſervation,
<
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and Delation
<
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of Sounds; and
<
lb
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the office of the
<
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Air thersin.</
note
>
Attenuating of the Air) is but a term of Ignorance; </
s
>
<
s
xml:id
="
echoid-s1783
"
xml:space
="
preserve
">and the motion is
<
lb
/>
but a catch of the Wit upon a few Inſtances, as the manner is in the
<
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Philoſophy received. </
s
>
<
s
xml:id
="
echoid-s1784
"
xml:space
="
preserve
">And it is common with Men, that if they have gotten
<
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a pretty expreſſion by a word of Art, that expreſſion goeth currant, though
<
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it be empty of matter. </
s
>
<
s
xml:id
="
echoid-s1785
"
xml:space
="
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">This conceit of Eliſion, appeareth moſt </
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>
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