Quart. Journ. Geol. Soc, Vol, XL. Pl. IT. 
Lagno and Vallone 
120 
ad, Pollena. 
SECTIONS OF ROCKS OF MONTE S()MMA AND VESUVIUS. 
110 
7) 
v 
3 
~ 
AY 
all wial pamiceous 
breccia, 
allayaum, br ecca- 
Zag 
concretions 
ete. 
breccia. 
ash, dust 
purace. or earth. 
pumiceous 
SCOrta. 
Rees 
SCOTUL 
Wed 
lax 
Rea 
Row ae 
Wsusranxs) 
Koay 
100 
Metres 
DI 
bee POLLENA 
VALLONE 
VALLONE 
VON BUCH 
Lagno di 
Troce. 
90 
SO 
70 
085. 
Streets of 
Pompuit 
Daxcerrievo LiTH 22 BetroRo S’ Coveny Sean 
hia. 
Vallone 
St Palrtz10. 
y 
Vallone 
Sanseveruww 
Vallone 
Pietri pomice 
200 VIL. 
40 
30. 
