( 378 ) 
pendulous Hair, proceeding from the lower Ridge of the 
Nofe : Under this Hair the Cavity is dark : Below the 
Nofethe Lip-ftiades (hew the more depreft places: Un- 
der this Lip are vifible four Forcipes to lay hold on its 
Food, two of each fide, as in the Figure. 
See the Figures^ the largejl of which is dram with the 
help of a Microfccpe, 
IX- An extraSl of a Letter from Dr. Robert ■ 
St. Clair, to Dr. Rob. Hook, F. R. S. giwng ^ 
an Account of a *very odd Eruption of Fire 
out of a Spot in the Earth near Fierenzola 
in Italy, xpith an eafy Contrivance of a hamp 
to be h^pt always full whilfl it burns. 
SIR, 
HAving lately had an Obfervation communicated to 
me by my Brother, which he made when he tra- 
velled through Italy laft, differing from any I have hi- 
therto met within Natural Hiftories, I prefumeyou may 
think it not unfit to be communicated to the Publick, 
and fo give it a Place in the next Philofophical Tranfa^i- 
ms. It is this : On a fide of one of the Appenine Moun- 
tains half way betwixt Bologm and Florence^ near a Place 
calkd Petra Mala, about Five Miies from Fierenzola, 
there is a Spot of Ground about three or four Miles dia- 
meter, which ince0andy fends up a Flame rifiag very i 
high, without Noift, Smoke or Smell ; yet it gives a ; 
very great Heat, and it has been obferved to be thus in ; . j 
all times, except of great Rains, which put it out for a j 
time ; but when that is over it burns with greater Vi- j 
gour and Hegt than before;, the Sand about it, when ' 
turn'd..; ji 
