Qenturj 111 , 
6 1 
or wich Oyley which though they be more light, yet are they more vn- 
equall Bodies than Aire. 
Of the Natures of the Mediums, we haue now fpoken-,As for the Difpo 
iition of the fiid Mediums, it doth confijl in the Penning, or not Penning of 
the Aire j Of which wee haue fpokenbefore, in the Title of Delation of 
Sound v.Jt conjifteth alfo in the Figure of the Concaue, thorow which it 
pjjjeth • Of which wee willfpeake next. 
How the Figures of Pipes , or Concern?s t thorow which 
Sounds paffe ; Or of other Bodies different ; conduce co rhe 
Variety and AkcndonofthevS'owwflf/ ; Eitherinrdpedt of the 
Greater Quantity, or leffe Quantity of Aire, which the (on 
r^w^rcceiue ,* Or in refped of the Carrying of Sounds longer 
or fhorccr way ; Or in refpedt of many other Qrcumflances ; 
they haue beene touched, as falling into other Titles. But 
thofc Figures, which we noware to fpeakc of, we intend to 
be, as they concernc ch c Lines thorow which Sound pafTeth ; 
As Straight ] Crooked ; Angular ; Circular j &c. 
The Figure ofa Bell partaketh of the Pyramis , but yet comining off, 
and dilating more luddenly.The Figure ofa Hunters Horne,and Cornet, 
is oblique-yet they haue like wife straight Hornes which if they be of 
the lame Bore with the Oblique , differ little in Sound -, Saue that the 
Straight require lomewhat a ftrongcr Blaft. The Figures of Recorders , 
and Flutes,* nd Pipes are ftraight^But the Recorder hath a IefleBore,and 
a greater. Aboue,and below.The Trumpet hath the Figure of the Letter 
S .-which maketh that Purling Sound,&c. Generally, the Straight Line 
hath the clcaneft and rounded Sound, and the Crooked the more Hoarfe^ 
and Iarring. 
Ofa Sinuous Pipe, that may haue fome foure Flexions, Triall would 
be made. Like wile ofa Pipe, made like a Croffe, open in the middeft. 
And fo likewife of an Angular Pipe: And lee what will be the Effe&s of 
thefe feuerall Sounds. And fo againe of a circular Pipe j As if you take a 
Pipe perfedlRound,and make a Hole whereinto you fha 11 blow 5 And 
another Hole not far re from that^But with aTrauerfe or Stop between 
them • So thdtyouf breath may goe the Round of the Circlepand come 
forth at the lecond Hole. You may trie likewile percufsions of Solide 
Bodies ot feuerall Figures • As Glofecs , Flats ,C ubes,Crojfes,Triangles, &;c. 
And rheir Combinations-^ Flat againft FUt\ And Conuexagamft Con- 
uex'i And COnuexi gainft Flat,See, And markc viiell the diuerlities of the 
Sounds.Trie alio the difference in Sound of feuerall Crajjitudes of Hard 
Bodies pcrcuffed, And take knowledge of rhe diuerlities of the Sounds. 
I my felfif haue tryed, that a Bell of Gold yeeldeth an excellent Sound, 
not inferionr to that of Siluer, or BraJJe ,buz rather better.-yet we fee that 
a peece 
Experiments 
in Contort, 
what the Fi¬ 
gures of the 
Pipes-flTCen- 
ceuss ,or the 
Bodies Difertnt 
conduce tothe 
Stands. 
221 
222 
