Qenturj II. 
rheF/4«wof ^Candle, it will not make it tremble much j though luoft, 
when thofe Litteri are pronounced, which contract the Mouth ; As F; 
S 3 r,and Tome others. But Gentle Breathing, or Blowing without /peaking , 
will mouc the CAndie farre more. And it is the more probable* that Sound 
is without any Locall Motion of the Atre, becaufeas itdiffereth from the 
£/*6f,inthatitneedetha Locall Motion of theat fir ft 5 Soitparalle- 
leth in fo many other things with the Sighted Radiation 0/things vijible* 
Which (vyithout all queftion) induce no Locall Motion in the Aire, as hath 
beenefaid. 
Neuerthelefle it is true* that vpon the No'tfe of Thunder, and great Ord¬ 
nance • Glafle windowes will fhake ■ and Fifties are thought-to bee fraied 
with the Motion, canted by Noi/e vpon the Water. But thefe Ef¬ 
fects arc from the Locall Motion of the Aire, which is a Concomitant 
of the Sound (as hath bcene faid •) and not from the Sound. 
It hathbecne anciently reported,and is ltill receiued.that Extreme Ap- 
ptaufes, and shouting of People aftembled in great Multitudes haue fo rati¬ 
fied, and broken the Aire, that Birds flying oner, hauefalnedowne, the 
Aire being notable tofupport them. Audit is bcleeued bv fome, that 
Great Ringing of Bels in populous Cities, hath chafed away Thunder: and 
alfodiffipared Pcftilent Aire: All which may be alfo from the Concuflion 
of the A ire, and not from the Sound. 
A very great Sound, neerehand, hath ftrucken many Deafe . And at 
fhelnftant they haue found, as it were, the breaking of a Skin or Parch 
ment in their Eare: And my felfe ftanding necre on that Lured loud, and 
fhrill, had fuddenlv an OiFence, as it fomewhathad broken, or beene dif- 
located in my Eare • And immediately after, a loud Ringing ; (Not an or¬ 
dinary Singing, or Hifling, but farre louder, and differing *,) fo as I feared 
fome Deafenejje. But after fome halfc Quarter of anHourc itvanifhcd. 
This Etfett may be truly referred vnto the Sound : For(as is commonly re* 
cciued) an ouer-potent obieB doth deftroy the Sen/e Pind/firttuall Species , 
(both Fifible and Audible) willworke vpon the Senforics, though they 
moue not any other Body. 
In Delation of Sounds, tHe Enclofure of them preferueth them, and cau- 
feth them to bee heard further. Andweefinde mRoules of Parchment, or 
Trunkes, the Mouth being laid to the one end of the Roule of Parchment, 
or Trunkc, and the Ear e to the other, the Sound is heard much further,than 
in the Open Aire. The Caufe is, for that the Sound fpendeth, and is diilipa- 
tedinthe Open Abe • But infuch Concauesit isconferncd, and contra¬ 
cted, Soalfo in a Peece of Ordnance,if you fpeake in the Touch-hole,and 
another lay his Eare to the Mouth of the Peece, the Sound palTeth, and is 
farre better heard, than in the Open Aire. 
It is further to bee confidered, how it proueth, and worketh, when 
the Sound is not enclofed all the Length of his Wav, butpaffeth part¬ 
ly thomw open Aire ; As where you ffiake fome diftance from a 
Trunke • or where the Bare is fome diftance from the Trunke , at theother 
End • Or where both Mouth and Eareavc: diftant from the Trunke. And 
E ir 
