_ |to be falfe, in that the Sound of a Belb-ftring, or the like, continueth melting, 
fometime after the Percuffion ; but ceafeth ftraight-ways, if the Bell or 
{String be touchedand ftayed; whereas, if itwere the Elifion of the Air, that 
made the Sound, it could not be that the touch of the Bell or String, fhould 
extinguifh fo fuddenly thatmotion, caufed by the Zlifion of the Air. This 
appeareth yet more manifeftly, by Chiming witha Hammer upon the out. 
fide of aBell; for the Sound will be according to the inward Concave 
of the Bell ; Whereas the Elifios or -Attenuation of the Air cannot be, 
but onely between the Hammer, and the outfideof the Bell. So again, 
| af it were an Elifion, a broad Hammer, and a Bodkin, ftruck upon Metal, 
would givea diverfe Tone, as well asa diverfe Loudnefs : Buttheydo not 
fo; for though the Sound of the onebe louder, and of the other fofter, yet 
| the Tone isthefame. Befides, in Eccho’s (whereof fome areasloud as the 
Original Voice) thereisnonew Elyfion, butaRepercuffion onely, But that, 
which convinceth it moftof all, is, That Sounds aregenerated, where there 
is no Air atall. But thefe, andthe like conceits, when Men have cleared 
their Underltanding, by the lightof Experience, will {catter andbreak up 
likea Mift. : 
It is certain, that Sounds is not produced at the firft, but with fome 
Local Motion of the Airor Flame, ot fome other Medium; nor yet without 
fome refiftance, either inthe Air, or the Body percuffed. For if therebea 
‘meer yielding or ceflion, it producethno Sound, as hath been faid. And 
therein Sounds differ from Light or Colours which pafs through the Air; 
| ot other Bodies, without any Local Motion of theAir, either at the firft, or 
after. But you muft attentively diftinguifh between the Local Motion of 
| the Air (which is but Vehiculum caufe, A Carrier of the Sounds,) andtheSounds 
| themfelves conveighed inthe Air, Foras tothe former, we fee manifeftly; 
that no Sound is produced (no not by Air it felf againft other Air, as in 
Organs, &c.) but with a perceptible Blaft of the Air, and with fome re- 
gentleft Motions of Air,) is with expulfionof alittkeBreath. And all Pipes 
havea blaft,as wellasaSound, We fee alfo manifeftly, that Sounds are car- 
_| thanagainft the Wind; and likewife, do rife and fall with the intenfion or 
_| remiffton of the Wind: But forthe Impreflion of the Sound, itis quite an- 
| other thing, and ‘is utterly without Local Motion of the Air, perceptible ; 
| and in thatrefembleth the (pecies vifible: For after a Man hath lured, or a 
| Bellis rung, we cannotdifcern any Perceptible Motion (arall) in the Air, as 
_| long 2s the found goeth, but onely atthe firft. Neither doth the Wind (as far 
| as itcarrieth a Voice) with the Motion thereof, confound any of the deli- 
*| cate, and Articulate Figurations of theAir, in varictyof Words. And ifa 
_| Manfpeak a good loudnefs againft rhe flame of a Candle, it will not make ir 
"| tremble much; though moft, when thofe Letters are pronounced, which 
| contract the mouth, asF,S, V,andfome others, But gentle breathing, or 
blowing without fpeaking, will move the @andle farmore. Andit is the 
| more probable, that Sound is without any Local Motion of the Air, becaufe 
| asit differeth from the fight, inthat it needeth a Local Motionof the Airat 
fir: Soit paralleleth in fo many other things withthe fight, and radiation of 
things invifible, which (without all queftion) induce no Local Motion in 
_ theAir, ashathbeenfaid,. —_- . 
_ Neverthelefsitis true, that uponthe noifeof Thunder, and great Ord- 
‘nance, Glafs Windows will fhake, and Fifhes are thoughtto be frayed with 
. : the 
fiance of the Air ftrucken. For, even all.Speech, ( which is one of the }, 
ried with Wind: Andtherefore Sounds will be hard further with the Wind; |- 
125. 
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