On the Vents of Hot Vapor in Tuscany. 215 
there found its issue along a line 4, 
of fracture coincident with the north 
and south direction which had b vgs 
impressed upon these lands a 
very remote period—such a 
though divergent from them, being 
simultaneous with the chief axes of 
upheaval i 
In speaking of divergent lines of 
fracture and elevation, “which offer s 
ptoofs of simultaneous eruption and. 
dislocation, I am led to terminate 
m 
ety pari to these two chains rye axis.—B, Rabie 02: 
and at the same time distinguish ~—C. Apuan Alps.—D. Corsica —E 
sti S dinia.-—G sone of Genoa, serpen 
them. To render my idea clear I tine Tock Lagoons of Tuscany.— 
have annexed the accompanying 7% Rom a Volcanoes Gron Sasso— 
V 
diagram, fig. 4. Whilst the direc- es 
(Pacopien ecopteris es and Annularia longi folia) in anthracite ape which on the 
right bank of the Era near Volterra form the lower he of the “Ve errucano,” or 
oes conglomerate of Italy. A aches to this pa the part of his 
as at the same time ma = by Profess ie Parlaore a ok the late meeting 
of the British rarest at Edinbur; This important discovery seems to prove 
that a lower boa of the rocks call i ‘Verrucano, which RA hitherto been consid- 
ered to e verter se of the lias, is of the same palzeozoic age as the con- 
slomerates of the Valorsine and other places in the Alps. Yet still, in reference to 
my opinion above exposed, the pan cur in Tuseany may either have been de- 
tived from lands now subm merged, 0 m the adjacent shores, of which the Silu- 
and ancient éryetalline rocks id ‘sain — Corsica are the existitig remnants. 
At all events, no rocks have ye to geologists in N r Cen- 
tral Italy which are of sufficient tiquit ae dry land where the 
coal plants grew, to’ which Professors Mevegh ini and Savi have drawn n. 
As Italy is thus connected still more closely with the Alps by the ature of an- 
thracite lants common to both countries, I would here allude to bl 
coal ude to an able recent . 
memoir of Professor Heer (Mittheilungen der Natur. Gesellscht. in Zurich, 1850,) im 
which, Specially referring to the case of Petit Coeur in Savoy, he argues, that the 
, ere being terres n 
plants found there beit strial and of the carboniferou the stratum in 
tn they are os not be united with th h contains marine 
iar : neral analogical reasoning of this autho u 
Journ. hmy wishes, as expres in the Memoirs on the Alps, Appennines and Carpathians 
Fo urn. Geol. See. , vol. vy, pp. 176, 177), that I have only g 
omitted int his readers, that I erences solely from the actual 
= nd position o th ‘ Seg! stated p- 
b es 
sider fin d be hep 3 
ered separate formations. With a utmost abate. to the value of organic re- 
per ga I felt however bound to affirm, ong in _ e af me oP of iss —_ nn oe 
ie de 
Aap 
‘ie sharp, inverted fallawe: hy if ti e by ie otal v deraaloa 
vt would how observe. oo, thie netapalerte gues are most opposed to the views 
» De Beaum and Sixmonda have not visited the locality, which they Smeg! 
Pa mar ve ders can explain awa vbw fair demonstration what they consider t 
