Excerpt from The London, Edinburgh and Dublin Philosophical Magazine, Vol. 6: And Journal of Theoretical, July December, 1853
Stratum 2, which is now nearly worked out, as it does not continue in a horizontal direction, so that unless previously known, it would be very difficult to find it in its original position. Its depth was from 10 to 12 inches. It rose with the first stratum and lasted for about 300 yards. I myself have but a small portion of the shells found here, as now they are difficult to be met with; and though I do possess shells from every stratum, my collection has been chiefly confined to the remains of the Vertebrata. I see in a list copied from Mr. Edwards and Wood, Limnea and Planorbis put down as found here. I have never found or even seen one of these shells from this bed, which is a true marine one. It consists of light yellow sand. The band mentioned as occurring at the top of the first stratum comes in after this disappears, and is undoubtedly freshwater. Among the commoner shells in this bed may be mentioned Cerithium cinctum, Neritina concava, Fusus labiatus, Melania fasciata and costata, Melanopsis ancillaroides, Natica depressa, and Cyrena obovata.
Stratum 3 is from 4 to 5 feet in thickness. It is composed of a lilac or gray clay with bunds of buff. Very narrow bands of lignite traverse this bed; the thickest occurs about 4 or 5 inches above its base. Its chief characteristic are the layers of Unio Solandri, which begin about 4 inches from the top, and go on increasing in numbers to nearly the end of the bed. They arc in beautiful preservation, though from their brittle nature it is very difficult to get them out in a perfect state. Associated with these are Paludina lenta, and principally towards the bottom of the bed Melania polygyra occurs.
Within a foot from the base, about 4 inches apart, are two layers of Melani? in a very perfect state; and resting on the green clay which forms the next stratum, is a bed of seeds of Carpolithes, &c., with but few of the shells which occur in the preceding layers; Paludina lenta being the principal, as well as Potamides cinctus.
No remains of vertcbrata are found here.
Stratum 4 varies from 10 to 12 feet, though it is generally very level. It is composed of a green marly clay, traversed by sandy scams. The clay is darkest at top and bottom, and becomes more sandy in the middle. The sandy seams contain Paludina lenta and Potamomya plana very much crushed; remains of fish, and very rarely Serpents' vertebr?, fish scales, and small teeth of Mammals undescribed, with also very small jaws. I have a large calcaneum found here, the only large bone that has ever been met with.
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