EXPLANATION OF PLATE 9- 
Fig. I. 
4. — Third scarp limestone. 
3. — Second „ „ 
2. — First „ „ 
1. — Hemiaster shales. 
Fio. 2. 
3. — Cephalopod horizon. 
2. — Brachiopod horizon. 
I. — Horizon oi Trigonia costata. 
