On the Vents of Hot Vapor in Tuscany. 205 
connection alluded to becomes much more interesting ; for, as 
bonic, and boracic acid, issue upon the very same line; and in 
following this line a little further to the S. by E., we reach Bagni 
a Morbo, where hot sulphureous springs issue from fissures in 
rocks similar to those of S. Michele and Monte Cerboli. Still 
nomena. hus, in my journey to the miocene coal tract of the 
wood-cut representing the issue at Sasso, will see that the line of 
Vapor issuing from cavities is parallel to the main direction of the 
encasing ridges.¢ Now, these ridges of alberese and macigno 
Oh a PS 
+ See Quart. Journ. Geol. Soc, vol 
{ Trattato di Geologia, p. 282. Pisa, 1847. Se, 
T cannot but express a hope that Mr. Babbage will at some time give to the 
public a copy of the suggestions he furnished to the Grand Duke of Tuscany, for 
hich might thus serve 
t. 
* This is well described by Targioni Tozzetti. 
. ¥, p 2972. 
