of the Ifland of Ponza. 
381 
EXPLANATION OF THE PLATES* 
Tab. X. Plan of the ifland of Ponza. 
T^. XI. View of part of the infide of the harbour of the 
ifland of Ponza. 
Fig. 1. Rock of lava, which in many parts is formed 
into regular fmall bafaltes of a reddilh caft, having 
probably been tinged with fome ochre. Mofl: of the 
detached rocks of this ifland refemble this. 
Fig. 2. See p. 374. 
Tab. XII. View taken from the outlide of the harbour of the 
ifland of Ponza, near the Lighthoufe. 
Fig. 1. Rock of volcanic matter converted to pure 
clay. 
— 2. Ditto, with ftrata of pumice-ftone. 
— 3. Rocks of lava inclining to take bafaltic forms, 
— 4. Rock compofed of fpherical bafaltes. 
Ddds 
