( ^^9^ ) 
lo like manner tmSoundsfiom two ceoters^one within the 
fooorous fpherc oi the other, do begio and are diftributed 
through the fmall particles of the Air, in fuch a maonerj that 
fomt of the pulfcs are afFefted by one found^and othersjwith^ 
out confufioDj by thecther, and that the pulfes of the acuter 
found are fvvifter and do cocnpleat their curlings in a 
fborter time, and die pulfes of the graver found in a longer^ 
The -J^r^ or fubtile matter, ia which thcfe motions of the 
Air aremadejaccordingtaits incomparable fublety^and that 
property which it bath of being altogether indifferent to any 
condition of bodies, and futed cxaftly to reprefent any moti- 
on, orftamp, or weight of other bodie s, among which 'tis 
found ^ this Aura^l fay^doth fecood, and not at all impede the 
two motions produced by thofe two forts of pulfesj being mo- 
ved with all the innumerable iocermediat motions. There 
may alfo more founds than two be diftributed through the 
particles of A!r5yct not without (bme coofution.And the more 
Sounds there are, the more coofufed will the diftribution of 
the pulles be, cfpecially near the centers themfelvcs, whence 
the Sounds begin* 
The Ear is sn Organ, by which a man placed laa fonorous 
Sphere perceives foundjConfonancys and fongs* This orgaa 
hath three parts 5 the exteriory which is without the Cavity 
of the Ear, and vifibiy extant on the head ^ the middle-mofi^ 
which is the Cavity itlclf, and the inner moU^ which being 
within the Cavky, is a ftony boneof the form of a fpunge, 
io which is a cavern, recurring to the hollow part of the Ear, 
aod ftaped like a knot of riboods {ttaU mjiro:^ Aod in all the 
holes of this fpungy-like bone there are found websftretch't 
out. that eoclofe the Air coogeoit or implanted. 
The Afi^^^/e part isclofedup by two membranes, called 
Brums^ ftretchtover the cavity of the Ear, And of thefe 
two, the one is external^ at the bottom of the exterior part 
of the Ear , and the other internal^ upon the month of the 
cavern. And between thefe Drums there are three fmall 
booes^ tied to one another, aod to the drums^ and faftned 
io two points to the lides or. the cavity, and movable^ 
lb that if the outward Drum doesftiakcj the inward muft 
ftiake. alfo 3 . and that twice as often. 
The 
