PLATE VIII. 
Figs. 1—9.—Marbles. 
1. Ruin Marble , cut and polished perpendicularly to the planes of the layers ; the vertical displacement of the individual 
dark-coloured layers is marked by right lines which correspond to the vertical cleavage, 1 from Tuscany. 
2. Fire Marble, or Lumachelli, polished, containing the remains of shells, a fragment of which is distinguished by play 
of colours in red, yellow, and green, which is probably due to a fossil Nautilus (Ammonite), from Carinthia. 
3. Red Marble , brecciated, from Northern Italy. 
4. Pale yellow Marble , from Florence. 
5. Black and white mottled brecciated Marble , from the mountain limestone of Ardennes. 
6. Blackish-grey Marble , enclosing petrified volutes (pyramidella turbinella), from the tertiary formation. 
7. Grey Marble , with dark streaks, from Italy. 
8. Red, green, and white-coloured brecciated or fragmentary Marble, from Sicily. 
9. Variegated Marble, enclosing corals, from the transition rocks of Nassau. 
