fitton's section at atherfield. 307 



near its rise on the east of Walpen Chine : the masses containing the 

 fossil are composed of sand with stem-hke impressions, already often 

 mentioned ; and in some of the larger I found Ammonites (Martini), 

 Gervillia solenoides, Trigonia alceformis and Terebr^atula sella. 



The sand No. 345, containing the small nodules which are the 

 highest in point of range of the genus Crioceras, crosses Ladder Chine 

 and may be seen in the chasm beneath it : about 4 feet from No. 33 

 are intermediate concretions (34 «) said to contain small Ammonites. 

 This appears to be the site also of some large fragments of a very 

 hard stone with impressions of a ribbed fossil, apparently a Nautilus, 

 the precise place of which I could not ascertain. 



Fossils of the Second Crioceras Ranges. — Nos. 26 to 34b. 



26. Panopaea mandibula. Gryphaea sinuata, Sow. 



Nautilus radiatus. Ostrea (two species). 



27-32. Crioceras Bowerbankii, Sow. 33. Cardiuin Cornuelianum (with 



Pinna ? other fossils). 



32. Mytilus lanceolatus (var. eden- Ma. tAmmonites Martini. 

 tulus). 



IX. Walpen and Ladder Sand. — No. 35. 



A mass of uniform greenish and grey sand, about 40 feet thick, 

 occupies the foot of the mural cliif for about 1300 feet, between the 

 rise of the uppermost Crioceras range and that of the second Gry- 

 phsea bed No. 36. Its upper part is best seen in Ladder Chine ; in 

 the lower part are several fossiliferous ranges, among which the fol- 

 lowing are remarkable : — 



35a, which I have taken as the base of this stratum, is a range of 

 nodules about 1§ foot thick and often 4 feet long, of dark olive-green 

 stone, with nuclei of fossils resembling those of No. 45 above — Brissus, 

 Serpula, Thetis, Gervillia, Modiola, Cuculleea, Corbula (striatula), 

 Venus, Cardium, Terebratula, Nerinea, Ammonites. 



355. About 6 feet higher up is a bed, almost continuous, but vary- 

 ing from a few inches to a foot in thickness, which consists for the 

 greater part of thread-like Serpulee, apparently twisted together, with 

 broad Terebratula Sella, Pectens, Gryphcea sinuata and Gr. laevigata 

 {Couloni). 



35c. A range of detached fossils at wide intervals, much-decom- 

 posed (possibly Scaphites), was visible within the upper part of 

 Ladder Chine, about 14 feet from the top of the sand. 



X. The Upper Gryphcea Group. — Nos. 36 and 37. 



No. 36, between 18 and 20 feet thick, occupies at the base of the cliff 

 about 625 hetX- About 4 feet at the bottom is yellowish and brown 



J The cliff near the rise of 36 is much lower than the other parts of the shore, and 

 in some places not more than 40 feet high. It is, thus far eastward from Walpen 

 Chine, mural, with an undercliff above it, and a second retired cliff within, which 

 is continued to Walpen High Cliff, gradually coming nearer to the sea. The 



