the barrier between this Anglo-Germanic and the Anglo-Parisian basin. The points of resemblance and difference, and the mutual relations of the Neocomian strata in the Anglo-Germanic, the Anglo- Parisian, the Jura, and the Mediterranean basins, I hope (should I be able to continue my study of these beds) to treat of in a future communication.
The succession of beds which I have described at Speeton, while its remarkable parallelism with the equivalent beds in Southern Europe has been generally acknowledged by Continental geologists*, has been appealed to by the advocates of several different schemes of classification as supporting their respective views†. Into these questions of classification, however, I refrain, for the present, from entering.
EXPLANATION OF PLATE XXIII.
Fig. 1. Ideal section across the Vale of Pickering.
a. Alluvium, b. Boulder-clay and other " drift " deposits. A. White Chalk. B. Hunstanton Red Rock, lying unconformably on C. Speeton Clay proper (Neocomian). D. " Coprolite Bed " (marking unconformity). E. Portlandian Clays. F. Kimmeridge Clays. G. Coralline Oolite.
Fig. 2. Ideal section along the northern escarpment of the Yorkshire Wolds.
A. White Chalk. B. Hunstanton Red Rock. C, C', C". Upper, Middle, and Lower Neocomian. D. Coprolite Bed. E. Portlandian. F. Kimmeridge.
Fig. 3. Sketch Map of parts of Yorkshire, Lincolnshire, and Norfolk, to illustrate the distribution of the Neocomian strata.
a. Alluvium &c. A. White Chalk. B. Hunstanton Red Rock. C. Neocomian. E. Upper Oolite. G. Middle Oolite. F. Lower Oolite. I. Lias.
Discussion.
Mr. Etheridge stated that he had examined sections in Brunswick and Hanover, at Hildesheim, and other places, and confirmed Mr. Judd's results. He remarked upon the occurrence of Pecten cinctus in the Middle Neocomian in England and in the Lower Neocomian in Germany.
Sir Charles Lyell noticed the occurrence of anticlinals and contortions in the Brunswick district, and remarked upon the comprehensiveness now ascribed to the " Speeton Clay," and on the correspondence of the phenomena observed in Yorkshire with those presented in the south of England, in passing from Folkestone to the Isle of Wight. He also mentioned the occurrence of Ammonites Deshayesii in the Hastings sand at Punfield, as indicating the marine and cretaceous nature of that deposit.
The President inquired as to the evidence of the representation of the Lower Neocomian by Wealden deposits in Germany.
Mr. Judd remarked that the Punfield marine band is absolutely en-
" On the events which produced and terminated the Purbeck and Wealden deposits of England and France," Phil. Mag. 4th ser. vol. xxv. (1863) p. 268.
- Bull. Soc. Geol. Fr. 2me ser. tom. xxvi. pp. 211-216 (1869).
† Vide " Notes on Continental Geology, by T. Davidson," Geol. Mag. 1869.
2b2
