15 
promiscuous confusion to the height of 220 feet above the level of 
the Sea. The section at Clifton Hill gives a good idea of this Post- 
Pliocene deposit. 
1.—Roads. 
 2,—Mould, with flints. 
3.—Rich brown, dark grey, and ochraceous loam, with shivered 
flints. 
4,—Olay, or brick-earth, 
5.—Ironstone, breccia, or Druid sandstone, mingled with clay, 
chalk-rubble, rotten flints, and sub-sulphate and hydrate of 
alumina. 
6.—Ferruginous chalk-rubble and ochraceous or chocolate-coloured 
loam, containing gypsum, brecciated masses of clay, gypsum and flints, 
spangled over and intercalated with crystals of selenite, and a kind of 
stone resembling veined marble. 
7.—Stained chalk, with veins of flints, 
Of these,— 
No. 3. Is a very curious deposit, chiefly of a chocolate or 
ochraceous colour, though in Montpellier Crescent it assumes a dark 
grey tint, and contains immense quantities of shivered flints, 
resembling flake-knives fashioned by Nature. Seams of fine sand also 
occur in this deposit ; one in Clifton Road, of a silver colour, was most 
probably bleached by the percolation of acids, derived from the 
vegetable soil. 
No. 4. Considered by Godwin Austin as the wash of a terrestrial 
surface under a far greater amount of annual rain-fall than we have at 
present, and of the same age as the coombe-rock, can hardly be the 
case, as in these excavations the coombe-rock lies beneath it. 
No. 5. Ata depth of 16 to 26 feet in Clifton Hill lie hundreds 
of tons of breccia and ironstone, frosted over with crystals of selenite. 
The breccia consists of rolled and angular flints, sand, and iron, like 
the beds in situ at Seaford, ornamented with botryoidal and reniform 
erystallizations. The chalk is of a dirty yellow. The sub-sulphate of 
alumina is snowy white or cream-coloured. The hydrate of alumina is 
pure white, and crumbles into a substance resembling magnesia. Seams 
of aluminite also intercalate the flints, rendering them very friable, A 
