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J\(aturall Hifiory 



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M5 



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be tried alfo in Pipes, being made far larger at the lower End : Or being 

 made with a Belly towards the lower End And then ifluing into a Itraight 

 Concave again. 



There is in Saint James % Fields, a Conduit of Brick, unto which joyneth 

 a low Vault And at the frnd of that, a Round Hoafe of Stone : And in the 

 Brick Conduit there is a Window ; And in the Round Houje, a Slit or Rift of 

 fome little breadth :if you cry out in the Rift, it will make a fearefull roaring 

 at the Window. The Caufe is the fame with the former h For that all Con- 

 caves, that proceed from more Narrow to more Broad, do amplifle the 

 Sound at the Coming out. 



Hawks Bells, that have Holes in the Sides, give a greater Ring, than if the 

 Pellet did ftrike upon Brafs, in the Open Air. The Caufe is the fame with 

 the firft Inflame of the T runck Namely, tor that the Sound Enclofed with 

 the Sides of the Bell, Cometh forth at the Holes unfpent,and more ftrong. 



In Drums, the Clofenefs round about, that prefer veth the Sound from 

 difperfing, maketh the Noife come forth at the Drum-Hole, far more loud, 

 and ftrong, than if you fhould ftrike upon the like Skin^ extended in the 

 Open Air. The Caufe is the fame with the two precedent. 



Sounds are better heard , and further off, in an Evening, or in the Night, 

 than at the Noon y or in the day. The Caufe is, for that in the Day, when the 

 Air is more Thin, ( no doubt ) the Sound pierceth better $ But when the 

 Air is more Thick ( as in the Night ) the Sound fpendeth and fpreaderh 

 abroad lefs : And fo it is a Degree of Fndoflure. As for the Ntght, it is 

 true alfo, that the Generall Silence helpeth. 



There be two kinds of Reflexions of Sounds the one at Diflanc e, which 

 \sthzEccho; Wherein the Originail is heard diftin&ly, and the Reflexion 

 alfo diftin&ly ^ Of which we (hall fpeak hereafter : The other in Concurrence, 

 When the Sound Reflecting ( the Reflexion being near at hand ) returneth 

 immediatly upon the Originail, and fo irerateth it not, but amplified! it. 

 Therefore we fee, that Mnfick upon the Water foundeth more 5 And fo 

 likewife Mufick is better in Chambers Wainfcotted, than Hanged, 



The Strings of a Lute or Violl, or Virginals, do give a farre greater 

 Soundjby reafon of the Knot and Board,2X\d Concave underneath,than if there 

 were nothing but only the Flat of a Board^ without that Hollow and Knot, 

 to let in the Upper Air into the Lower. The Caufe is, the Communicati- 

 on of the Upper Air with the Lower ^ And penning of both from Expence, 

 or Difperfing. 



An Irijh Harp hath Open Air on both fides of the Strings : And it 

 ' hath the Concave or Belly, not along the Strings but at the End of the Strings. 

 It maketh .a more Refounding Sound, than a Bandora, Orpharion, or Cittern, 

 which have likewife Wire-firings. I judge the Caufe to be, for that Open 

 Air on both Sides helpeth, fo that there be a Concave 5 Which is therefore 

 beft placed at the End. 



In a VirgwaJl, when the Lid is down, it maketh a more exile Sound, than 

 when the Lid is open. The Caufe is, for that all Shutting in of Air, where 

 there is no competent Vent, dampeth the Sound; Which maintaineth like- 

 wife the former Infiance 5 For the Belly of the Lute,, or Violl, doth pen the 

 ^irfomevvhat. v 



There is *ChurchatGlocefter y (andaslhave heard the like is in fome 

 other places-,) where if you fpeak againft a Wall, foftly, another mail 

 hear your Voice better a good way off, than near hand. Enquire more 

 particularly of the Fame ot that place. Ifuppofe there is fome Vault,or 



Hollow, 



