Qentury II 
Tr unhot’ it of the length of two Recorders, and the Holes anfwerablc 
toward each entl^ And let two play the fame lefTon vpon it,at an Vni 
fon: And let it be noted* whether the sound be confounded,or ampli¬ 
fied ‘ or dulled. So likewile jet a CroJJ'e bee made 3 ot two Trunckes 
(tlmrow-out) hollow; And let two lpeake,or ling,the one long-waies, 
the other trauerfe: And let two heare at the oppolite Ends; And note* 
whether the Sound be confounded • amplified ; or dulled.Which two 
Injlmces wilialfo giue light to the Mixture of 5o««^j*whcreof we fhall 
fpeake hereafter. 
A Bellpwes blowne in at the Hole of a Brumme, and the Brum then 
ftrucken, maketh the sounds little flatter *but no other apparent Alte¬ 
ration. The Caufe is manifeift • Partly for that it hindereth the Ifliie of 
the Sound And partly for that it maketh the Aire, being blowne to¬ 
gether-* lefle moueable. 
T He Loudnejfe and Softnejje of Sounds 3 is a Thing diftinft from the 
Magnitude and Exilitie of Sounds ; For a Safe Sm^though loftly 
ftrucken,giueth the greater Sound-, But a 7 reble String,it hard ftrucken, 
will be heard much further off: And the Caufei s,for that the Bafe String 
ftriketh more Aire ; And the Tr^/Hefle Aire, but with a fharper per- 
cuffion. 
It is therfore the Strength of the Percujfion,that is a Principal! Caufe 
of the Loudnejfe ox Softnejje otsounds:As in knocking harder or fofter- 
Winding of a Horne ftronger or weakerRinging of a Hand-bell har¬ 
der or folter,&:c. And the Jlrength of this percujfion confifteth as much, 
or moreen the Hardnejfe ohhe Bodypercujjed, as in the Force of the Bo¬ 
dy percujftng: For if you ftrike againft a Cloth,it will giue a lefTe Sound- 
If againft Wood* a greater 5 If againft Metall* yet a greater s And in 
Metals,if you ftrike againft Gold,(which is the more pliant,)ic giueth 
the flatter Sound*, If againft Siluer,or Brafle,the more Ringing Sound. 
As for Aire, where it is ftrongly pent, it matcheth a Hard Bodie. And 
therfore we fee in difehargingof a Pm*,what a great Noife it maketh. 
We fee alfo,that theCharge with Bullet- Or with paper wet,and hard 
flopped • Or with powder alone, rammed in hard • maketh no great 
difference in the Loudnejfe of the Report. 
The sharpnejje or guickneffe of the Percufjion, is a great Caufe of the 
Loudnejfe,as well as the Jirength: As in a Whip,or Wand,if you ftrike 
the Aire with it-the fharper and quicker you ftrike it, the/o uder sound 
it giueth* And in s playing vpon the Lute,oxrirginals b thcqni:ke ftroke 
or Touches a great life to the Sound.The Caufe is, for that the Quicke 
Strikingcutteth the Aire fpecdilyj whereas the Soft Striking doth ra 
ther beat than cur,.. ^ 
The Communication oF Sounds (as iti pdlies of Lutes •' Enip tie 
VclTelsy&V.) hath beenetouched qtiicr, in thdMaioramn of 
Sounds-Rut itisrfic alfo to make a Tit leaf it apart, * 
The 
49 
X6i 
Experiments 
in Contort 
couching the 
Loudntfte or 
S ofmpi of 
Sounds-, and 
thznCarriagt at 
longer e> fhorter 
Dijtaxee. 
161 
154 
155 
Experiments 
in CcrifoU tou¬ 
ching the Cox- 
munieaticnof 
Sonn(h>i 
