Some few words must be said about them. The highest beds, known as the Hunting Bridge Beds, occur in Copse St. Leonards, not far from the Fritham Road.[274] In a descending order, separated by thirty or forty feet of unfossiliferous clays, come the Shepherd’s Gutter Beds, to be found about half a mile lower down the King’s Gairn Brook; and below them, again, separated by forty or fifty feet of unfossiliferous clays, and situated somewhat more than a mile lower down the same stream, rise the Brook Beds. Still farther down, too, from some shells very lately discovered at Cadenham, it is supposed that the Cerithium Bed of Stubbington and Bracklesham Bay will be found, but this is not yet ascertained.
The Hunting Bridge Beds I have never examined, but subjoin their measurements, as also their most typical shells,[275] and must here content myself to give a general description of the Shepherd’s Gutter and Brook Beds. The former, the equivalent to the Nummulina Bed at Stubbington, Bracklesham, and White-Cliff Bay, is so called from a small stream at the foot of Bramble Hill Wood, about a mile due north of the King’s Gairn Brook. The measurements are as follows:—(1) Gravel from one to five feet; (2) light-coloured clay, with a few fossils sparingly distributed, five to six feet; (3) Turritella carinifera bed, one foot and a half; (4) fossil bed, characterized by Conus deperditus, and the abundance of Pecten corneus within a few inches of the bottom, one foot and a half.
Shells from the Shepherd’s Gutter Beds.
It is worth noticing that these, like all the Bracklesham beds, roll. In a pit which Mr. Keeping and myself dug we found there had been a regular displacement of the gravel, and that the beds rose at an angle of thirty degrees, whilst the fossil bed was three feet lower on one side than the other of the pit. In another, after cutting through a foot of gravel, in which we found the os inominatum, of probably Bos longifrons,[276] and a bed of sandy clay about two feet in thickness, we came upon a deposit of gravel about four inches thick, lying in the depressions of the stiff brown clay which succeeded, and in which still remained roots and vegetable matter. Thus we can plainly see that, after the clay had been deposited, vegetable, and perhaps animal, life flourished. Then came the gravel, carrying all before it, and in its turn, too, was nearly swept away, and only left here and there in a few scattered patches.
Perhaps, nothing is so startling as this insecurity of life. As was the Past so will be the Future, guided, though, always by that Law, which at every step still rises, moving in no circle, but out of ruin bringing order, and from Death, Life.
The Brook Beds I can best describe for the general reader by an account of a pit which Mr. Keeping and myself made. It was sunk about 20 feet from the King’s Gairn Brook, and measured about 6 yards long by 4 broad. We first cut through a loamy sand, measuring 3 feet, and then came upon 19 inches of gravel, where at the base stretched the half fossilized trunk of an oak, and a thick drift of leaves mixed with black peaty matter, the remains of some primæval forest. Three feet of light-coloured clay, unfossiliferous, succeeded; and then came the Corbula Bed, with its myriads of Corbula pisum, massed together, nearly all pierced by their enemies, the Murices. Stiff light-coloured clay, measuring 18 inches, followed, revealing some of the shells, which were to be found so plentiful in the next stratum. Here, at the Pleurotoma attenuata Bed, our harvest commenced, and since Mr. Keeping has worked these beds, no spot has ever yielded such rich results. Every stroke of the pick showed the pearl and opal-shaded colours of the nautilus, and the rich chestnut glaze of the Pecten corneus, whilst at the bottom lay the great thick-shelled Carditæ planicostæ. Inside one of these were enclosed two most lovely specimens of Calyptræa trochiformis. Mr. Keeping here, too, found a young specimen of Natica cepacea (?), and I had the good fortune to turn up the largest Pleurotoma attenuata ever yet discovered, measuring 4½ inches in length, and 3¼ inches in circumference round the thickest whorl.
We were now down no less than 8 feet. And at this stage the water from the brook, which had been threatening, began to burst in upon us from the north side. We, however, with intervals of bailing, still pushed on till we reached the next bed of pale clay, measuring from 7 to 8 inches, containing Cassidariæ highly pyritised, and sharks’ teeth, amongst which Mr. Keeping discovered an enormous spine, measuring at least 10 inches in length, but we were unable to take it out perfect. The water had all this time been gaining upon us, in spite of our continuous efforts to bail it with buckets. We, however, succeeded in making the Voluta horrida bed, which seemed, at this spot, literally teeming with shells. Each spitful, too, showed specimens of fruit, earbones, fish-palates, drift-wood, and those nodular concretions which had gathered round some berry or coral.[277]
At this point, the water, which was now pouring through the side in a complete stream, and a rumbling noise, showed danger was imminent. Hastily picking up our tools and fossils we retreated. In a moment a mass of clay began to move, and two or three tons, completely burying our bed, fell where we had stood. Founder after founder kept succeeding, driving the water up to higher levels. We procured assistance, but precious time was lost. Night began to fall, and we were obliged to leave unworked one of the richest spots which, in these beds, may, perhaps, ever be met.
As it was, we found no less than sixty-one species, including in all 230 good cabinet specimens, which, considering the small size of the pit, and our limited time, and the great disadvantages under which we worked, well showed the richness of these beds.