C "5 ) 
thoufandtli part of Ait is not Nitrous, on which he will 
not enlarge, referving that to another Diftourfe : But 
thinks it probable that the whole Air may get into the 
Blood and rarifie it, as we fee it capable ot farefa<ak)n 
abroad, he having,after wafting the Lungs by injedions, 
pafled the Air out of the Trachea Arteria into the Heart 
by the Fena Vulmonalis ; neither does he believe Nitre 
neceflarv to flame, feeing a Fire burns in an Oven to 
the fartner end, whether 'tis hard to conceive it could 
arrive unfpoird of its Nitrous Particles. The Author 
gives another reafon for the lingring Afthm.as, Confum* 
prions and Paifies of Stonecutters, Miners, viz.. 
the filling their Lungs with Duft, found on their diSkCtU 
on ; or the coagulating the Blood by degrees, and crea- 
jting Obftrudliorts in Ltrngs and Brain, whence paucity 
Spirits, &c which the Author thinks may be beft 
renaedied with voteiles and openers of Obftry»aiGn$. . 
He does not proceed further on DampSy having thought 
it fufficient to give this account of them in gcnerkl 
The fame Author gives 2Ln ^ccmnt 6{ Mount J^tfm 
and of its late Eruption; telling us that the Hill is blunt, 
and has at top a large cavity two miles aboutj which in 
the middle has another Mountain, and in it a Cavity, 
out of this comes the Smoak and Flame, which in > 
Aj>ril 16^^. it began to throw out with a noife more 
than ufual, and attrighted the people Tie^T it ; fo a^ thty v 
removed themftlves and goods. On the fifth day after,a 
River of Mdtcd Metal ran down the Mountain by a 
flow pace ; to prevent the ravage of which, the Vice- ^ 
roy ordered a great Ditch to be dug to receive it in, ^ 
where after eight days fpace it retted, a mile from the 
Sea. Then the whbfe R^^ef MtMn Matter from 
2O t0 ty^o paGesr;bi\oa4 i^n^ 15 to - 
Sp ,f%ces, and 4te kngth 4 mifes ; fhe r^crementiriDts ^ 
and lighter parts of which were at top, the more meta!- ~ 
lin atbottom. The Author believes this matter to have 
in 
