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_. There.isa Churchat Glocefler, (and as I have heard, the likeis infomé | 
} other places) where if you {peak againft a Wall foftly, «another fhall hear | 
| Jarly of the fame of that place. I fuppcfe there isfome Vault, or Hollow, | 
Jorlile, behinde the Wall, and fome paflage to it, towards the further end of | 
| chat Wall againft which you {peak : So as. the voice of him that {peaketh | 
| flideth along the Wall, and then entreth at fome paflage, and communi- 
| cateth with the Air of the Hollow ; for it is prelerved fomewhat by the 
plain Wall; but that is too weak to give a Sound audible; tillit hath com- 
muunicated with the back Air. vin the 
Strike upon a Bow-ftring, and lay the Horn of the Bow near your Ear, 
_ | and it willincreafe theSound, and make adegree of a fone. Thecaufeis 
| forthat the fenfory, byreafon of theclofe holding ispercufled, before the 
_ | Air difperieth. Thelike is, if you holdthe Horn betwixt your Teeth. But 
| thatisaplain Dilation of the Sound, from the Teeth tothe /nffrument of Hear. 
‘ | ing 5 forthereis a great entercourfe between thofe two parts, as appeareth 
| by this, that a arth grating Tunefetteth the Teeth onecdge. "The like 
« | falleth out,if the Horn of the Bowbe put uponthe Temples; but that is but 
| the flide of the Sound from thence to the ear. 
| if youhad ftrack, itwould make alittle. flatnoife in the Room whercit was 
“Mtruck; but it would make a great bomb inthe Chamber beneath. . 
5 | © The found which is made by Buckets ina Well, when they touch upon 
| the Water, or when they ftrike upon the fide of the Well; or when two | 
| Buckets dafh the one againft the other. Thefe Soundsare deeper and fuller, 
_ than if the like Percuflion were made in the open Air. ‘The caule is the 
i penning and enclofure of the Air in the Concave of the Well, 
. | Barrels placed in a Room under the Floor of aChamber, makeall 
: 
f 
“noifesin the fame Chamber more fulland refounding. A 
| Sothatthere be five ways (ingeneral) of ¢Majoration of Sounds, Enclofure 
| Simple, ¢ nclofwre inthe Dilatation, Communication, Reflexion, Concurrent, and Ap- | 
: proach tothe Senfory. | 
z i | For Exility of the Voice, or other Sounds: Itis certain, that the Voice | 
_ doth pals chorow folid and hard Bodies, if they be not too thick; and thorow 
| Water, which is lixewife avery clofeBody, and fuch anoneas letteth not 
| in Air. Butthenthe Voice or other Sound is reduced, by fuch paflagetoa 
| great weaknefsorexility. If therefore you ftopthe Holesof a Hawks Bell, 
|} it will makeno ring, but aflat noifé orrattle. And fodoth the ~Ztities or 
Eagles Stone, which hatha little ftone withinit.. . 
} ; Andas for Watersitisa certain Tryal: Letamangointo a Bath, and 
. take a Pajl and turn the bottom upward; and carry the mouth of it 
(even) down to the level of the Water, and fo prefs it down under the | 
Water fome handful and an half, ftill keeping it even, that itmay not tile 
' oneither fide, and fo the Airgetout: [hen lethim thatis in the Bath, dive 
E 2 with 
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[ 39 
| your voice better a good way off, than near hand. Inquire more pariicu- ; 
14%. 
Sajbvsnhosneseneesuninacgiiinahd 
149. 
150. 
15 2. 
153. 
‘154. 
