a clay, 7-1/2 feet thick. No. 9 is an indurated shell-band, 3 inches thick ; its shells are different from those found in No. 13. Some of the species that make their first appearance here go on increasing in numbers in the deposits marked 8 and 7. Specimens 9, 9 a, 9 b, contain numerous fragments and casts of shells, obscure gregarious bi- valves [possibly Cyrena, T. R. J.].
No. 8 is a clay, from 18 inches to 2 feet where thickest, interspersed with streaky patches of shells [Cerithium ?, T. R. J.], the intervening clay being devoid of them.
No. 7 is a deep-red clay, with yellow stripes running through it. This, like the preceding, has bands of shells (small bivalves and univalves).
It is remarkable of these three last-mentioned strata, Nos. 7, 8, and 9 [which may be of estuarine origin, T. R. J.], that they gradually thin out.
The deposit No. 6 is a light slate-coloured clay, 9 feet 2 inches thick. No. 5 is a narrow band of clay, varying in width from 1 to 3 inches, full of fragments of shells, with a small Ostrea in abundance. Above this is a deposit of a similar light slate-coloured clay, No. 4, 8 feet 6 inches thick ; and upon this a stripe of a yellowish sandy clay (No. 3) or, rather, a loam, pulverizing between the fingers; and above it is a clay similar to Nos, 4 & 6, two feet thick. This is capped with a sandy kind of marl, No. 1, varying from 2 to 4 feet
- The sides of this outlier were too
thickly covered with debris for me to obtain a good section ; but I imagine that it must be similar to the stratified clays at the Bethelsdorp Saltpan, as the spines of Cidaris pustulifera are found in the debris.
