C 1 
iMofetel efpecially from the Cavities, and the Fiffares 
of former Torrents ; , as alfo on the Plain : But jnone 
were obferved in the Matter of this laft Eruption. They 
iffued out of the Fiffures under the A^ppearance of a 
cold Wind, and rofe about three Palms high} then 
they moved along the Surface of the Ground, and, 
after a Progrefs of fome Paces, difappeared. Ani- 
mals, which happened to graze where thefe palled, 
were all killed thereby 5 • and likewife a Terejian 
Frier, whof inadvertently breathed the Vapour of one 
of thefe Damps. 
E X P E R I M ENT VI. 
Having placed the ( Barometer in the Vapour, it 
underwent no Change, but the Thermometer fell 
fomewhat mote or leS, A lighted Torch, thruft into 
them at two Palms from the Ground, was foon ex- 
tinguilhed by the AdiOn of the Damp. 
Experiment VIL 
Thefe Damps grew gradually weaker in their per- 
nicious Effefts for above three Months, even to the 
fubfequent Autumn ; as has been generally found in 
other former Eruptions, or when they happened to 
iflUe out of their Vents. 
Experiment VIII. 
Concerning the Salts which arc generated in Abun- 
dance in V^uviuSy I have, by Order of the Aca- 
demy, examined them by accurate Experiments. 
My Intention was to know, if befides Salt Ammo- 
niac, there were alfo Sea-Salt, Vitriol, Nitre, or any 
other 
