' Of OXFO%p^S HI%E. zp'^ 
by the fenfe^ but follows by a parity of reafon ; contrary to 
what Des Canes ^ afferts, that fuch vibrations are found on- 
ly in upper thirds and fifths, 
208. From the fame Frinciples may be (bewn how a Man may 
ftrike any two Notes with his mouth at the fame time. For if a Man 
open his mouth in two places at once, as AB to BC^ Fig. 17. or as 
I to 2 both in length and bredth^ and then force out the breath 
ftrongly againft them (thus opened) fo that the found be all begot- 
ten there (as in whiiiling) you will hear diftind and perfeft 
c^aves^fer Trine. 2. And fo fecondly,if a Man can open his lip as 
BC to CD.,Fig, 1 8. or as 2 to 3 in length & breclth^2nd do as before, 
he will ftrike fifths^ per Princip. 2. And after the fame manner for 
the reft of the Notes., according to the divifion of the Monochord. 
209. According to which Hypot he/is one Hooper here of Oxford 
could fo clofe his lips^ as to fing an o6iave at the fame time. And 
I know two other perfons now living here, that can do it though 
their lips feem not to be fet in that pofture, yet they fiiut them fo 
clofe that they can by no means pronounce any thing articulate. 
But he that excels them all, and indeed to a miracle, is one Mr. 
Jojhuah Dring^ a young Gentleman of Hart-hall^ who fings a Song 
articulatlj^orepatulo,zndz\\ inc^iavesfo very ftrongly ,& yet with- 
out much ftrainingithat he equals if not excels theloudeft Organ. 
210. By what means he performs this, is hard to guefs, unlefs 
the Epiglottic and Vvula he both concerned in it, one founding the 
upp£T.y and the other the lower oSiave ; or either of them apart, o- 
pening unequally as i to 2 in Fig, 1 7. or which is moft likely of 
the three^ by an unequal application of the Vvula to the Epiglot- 
tis, For his own part he can give but little account of it himfelf 
only that he performs it in the lower part of his throaty and that 
it came cafually on him at firft, upon draining his voice ; yet muft 
it not be reckoned a meer cafualtj neither,for he lings thefe o^aves^ 
or otherwife (and both very ftrongly) according to pleafure. 
And this is all I know of new, concerning the Mathematicks-i ex-= 
cept there be anything of Chorcgraphy in the Map of Oxford-fijire 
prefixt to this Effay^ that may be thought worthy the name of a 
nevp Contrivance, 
2113 In Natural Philofopby-i Medicine and Anatomy^ there have 
alfo been many new Inventions and Improvements^ made of later 
years in this Vniverfitj^ which as they promifcuoufly fell out in order 
VMufica Covipend.p. 9. 
Pp 2 of 
