oe 
= 
iz 
are 
VOLCANIC PRODUCTS. 
199 
Parr L Seon. i. § 1] 
Jets of vapour 
But even from volcanoes which, like the Solfatara of 
Naples, have been dormant for centuries, steam sometimes still rises 
of water. 
without intermission and in considerable volume. 
*(NASAVASUMLTV MA 
NOA SQISOIUVG) MIVYIHOUW ANNO], AHL WOM VNIGE JO MAIA—'ZE “Ol 





Z 

ive. The 
and the 
when the 
like that made by the steam blown off by a locomot 
ften so large, 
, that only now and then, 
rush out from clefts in the sides and bottom of a crater with a 
number of these funnels or fumaroles is o 
noise 
amount of vapour so abundant 
