I30.no bottom 
120, no bottorr* 
*80,no bottom 
30 .no bottom 
R EFERENCE S . 
® Centre of Great Crater . 
X Lateral* Volcanic Cone . 
Dikes. 
Line of Upheaval/. 
- — > Direction < of flow of Lara . 
- b .> Denotes that the angle of indiiiaiioTv 
of the Strata is 5? 
— Denotes that the angle of inclination , 
is from.' Z” to 3°. 
Hie figures denote , Elevation above 
Sea- leveL in feet , and depth, below 
Seay level' in fathoms . 
< > Denotes horizontal stratification. 
/, Site of extinct Solfatara >. 
a. Ochre beds and coloured Marls . 
I60.no bottom 
54 
250, no bottom 
London, . 
