173 Dr. FiTTON on the Strata below the Chalk. 



On the west of Galley-hill, the strata in the banks, which scarcely can be called cliffs, are in- 

 clined slightly to the west of south ; and the flat shore, near Cowden Point, consists of beds of clay 

 and sandy clay, varying in colour from dark to bright blue, declining very gently towards the 

 south-west, and extending outwards to some distance under the sea, with a strike towards a point 

 about 16° south of east. Under the Martello Tower, No. 51, about four miles west from Galley- 

 hill, is sand-rock, with ferruginous seams, and thin alternating beds of clay, slightly inclined to the 

 west; from their situation not improbably one of the groups subordinate to the Weald-clay men- 

 tioned by Mr. Martin. 



(85.) Endogenites erosa. — In cutting down the cliff on the east of the 

 White Rock, immediately within the site of the new Brewery, large sur- 

 faces of the several strata were successively laid bare ; and I was so fortunate 

 as to visit the place when one of them was exposed, which contained a great 

 number of the singular fossil bodies to which the name Endogenites erosa 

 has been given, and to see some of them in their original position before 

 they were disturbed. The workmen assured me that the fossils had been still 

 more numerous in a portion of the same strata cut away not long before. 



The place in the series, of the strata which include these fossils, has been already mentioned 

 (p. 164-8.). I observed but one line in the face of the cliff which seemed to afford them, about 

 6 feet from the top of the group III. 6. (81.) and (82.), which was about 10 feet in total thickness. 

 The workmen told me, however, that some were afterwards found at a short distance below, where 

 the strata were still nearly the same. I did not find any specimens of the fossil upon the shore ; but 

 fragments are frequently washed up by the sea in the neighbourhood of this place ; and I saw a very 

 large specimen in the face of the bank, on the side of the road over Cuckoo Hill, which joins that 

 from Hollington to Hastings. Mr. Woodbine Parish obtained one, (Plate XIX. fig. 8.), which was 

 dug out in his presence near the Church at St. Leonard's. Their occurrence at Tilgate Forest, where 

 they were discovered by Mr. Mantell, has been mentioned in the Geological Transactions and in his 

 own publications*; and Mr. Martin mentions the Endogenites, as having been found near Mulsey, 

 in Western Sussex, in the first course of sand with reddish clay, subordinate to the Weald-clay, 

 and above the Sussex marblef. There can be little doubt that when the corresponding beds in 

 other parts of the Wealden district have been examined, they will be more extensively discovered. 



The rapid change of character in the beds of this formation appears from the fact, that the 

 great concretions of grit, several feet in length, and 2 or 3 feet in thickness, which are found upon 

 the shore to the westward, do not occur in this cliff, though not more than 200 paces distant ; their 

 place being apparently supplied, in the strata above those which include the Endogenites, by nodular 

 masses of hardened sand-rock. The bed III. h. 2. e. (p. 167.) which includes these fossils, passes 

 both above and below into the adjacent strata, but has in general a darker hue. The fossils were 

 closely enveloped in a mass of slightly coherent sandy clay ; and I was enabled, with care, to 

 preserve some specimens, (one of which is represented in Plate XIX. fig. 4. a. and b.) with part of 

 the surrounding rock still adhering, as a proof that the coating of coal by which the nucleus was 

 invested had never been of greater thickness, and that the whole of it was retained. 



(85.) All the specimens of this singular fossil which I saw, lay with their 



* Geol. Trans., 2nd Series, vol. i., p. 423; — and Mantell's Fossils of Tilgate, p. 54. 

 t " Memoir" &c. p. 41, note J. 



