The Problems are theft , 
1. Sonum intendere quoufque veils -y or. Datum /onum 
ad datum gradum intendere, 
2. Sonum Extender tKquoufque veils 3 or. Datum Sonum 
ad da:ara diftantiam extendere feu propagare. 
3» Sonum tranfire ab extremo adtxtrtmum ttnon per Me- 
dium, 
J.Thefirftis, To make thi I afi Sound(hY t\iQ\id^oi la- 
ilruments j as loudas the grtateft ^ a whifper to become 
as loud as thefhotof a Canon. 
By the help of this Frobleme the moft minute Sounds 
in nature may be clearly and dittindrly heard. 
2. The fecond is. To propagate any (t\it\t2L^) Sound to 
the greatefl diftance. 
By the help hereof any Sound may be convey d to any, 
and therefore heard at any, diltance, ( I muft add, with- 
in a certain, though very large Sphear, ) 
Moreover by this means a Weather-cock^ may be fo 
contriv'd, as that with an ordinary blaft of Wind ic 
fliall crie ( or whittle ) loud enough to be heard many 
Leagues. Which happily may be found of (ome ufe, not 
only for Pilots in mighty tempeftuous weather , when 
light houfes are render d almoft ufelefs : But alfo for 
the meafuring the ftrength of Winds ^ if allowance be 
made for their different Moyfture. For I conceive, 
that the more drie any wind is, the louder it will 
whittle caeteris paribus; I fay, ceteris paribus, becaufe, 
befides the ftrength and drienefs of Winds or breath, 
there are a great many other things ('hereafter to be 
confider d ) that concur to the increafe or magnifying of 
Sounds, begotten by them in an Inftrument expofed to 
their violence, or bown into. 
H 
3. The 
