r ] 
in another Eruption by Tomafo Cornelio. But for 
the greater Elucidation of Truth, one of thefe Stones 
being applied to the Magnetic Needle, it turned to 
the Stone 5 and then carrying it round to the op^ 
police End of the Needle, it immediately turned from 
it, in the fame manner as if Iron was applied near 
the Compaft. 
E X P E R,I M E N T ‘ II. 
' The Stdhcs are not ’ all of the fame Dcnlity or 
Colour} but various, and of different Pohderofity. 
Some are compofed of real Talc, others full of 
Marcalites: Some are almofl: all fulphureous, others 
nitrofe ijf ibme of a grey. Colour, others fejd. i 
1 i ' 
] j , E X:P,E R I K E.N T III. ; , 
^ ... 
The Matter of th? Current is fpongy at Top, but 
very denfe towards the Bottom ; which is a Proof of 
the Fufibility^ thereof} ^^w hereby the heavier Bodies 
fubfided, and the lighter fehiained at Top. 
Exp e r I m e n r IV. 
After growing hard, it retained part of the Heat 
above a, Moath>* though uneq^ually ;- Tor in the in- 
ward Parts, where the Air had not free Acceft, and 
the Matter was more compaft, the Heat was much 
flronger than towards’tht ^thfaCe. 
E X P E R T'm’ e n t ‘ V. 
.vi.Twency Days after the Eruption, m divers Parts 
of the Mountain, from’/ thici Bottom ito ' the Top, 
there wci'C^Teeh tofarJfe maiiyl pernicious Damps, 
- . I i IMO- 
