Vol.65-] FOSSIL PLANTS FROM THE KENT COALFIELD. 39 



Zeiller, R. (88). 'Flore Fossile du Bassin Houiller de Valenciennes,' Text 1888, 



Atlas 1886, Paris. (Etudes des Gites Mineraux de la France.) 

 Zeiilee, R. (92). ' Sur les Empreintes du Sondage de Douvres ' Corapt. Rend. 



Acad. Sci. vol. cxv, p. 626, 1892 ; also Ann. des Mines, ser. 9, Mem. vol. ii 



(Bull.) p. 599, 1892 ; also transl. by M. Stirrup, in Trans. Manchester Geol. 



Soc. vol. xxii, p. 55, 1895. 

 Zeixeek, R. (94 1 ). 'Sur les Subdivisions du Westphalien du Nord de |la France 



d'apres les Caracteres de la Flore ' Bull. Soc. Geol. France, ser. 3, vol. xxii, 



p. 483, 1894. 

 Zeillee, R. (94 2 ). ' Note sur les Rapports de la Flore du Bassin Houiller de Douvres 



avec la Flore du Bassin du Pas-de-Calais ' Compt. Rend. Mens. Soc. Indus. 



Miner. 1894, p. 122 ; see also ' Colliery Guardian ' vol. lxviii, p. 788, 1894. 



EXPLANATION OF PLATE I. 



[All the figured specimens hare been kindly presented by Mr. Arthur Burr 

 to the Sedgwick Museum, Cambridge (Carboniferous Plant Coll.).] 



Fig. 1. Annularia sphenophi/lloides (Zenker). From the Waldershare Series at 

 1843 feet. No. 1914. X f. (See p. 25.) 



2. Neuropteris ra.rinervis, Bunb. From the Waldershare Series at 



1762 feet. No. 1915. X 2. (See p. 26.) 



3. Neuropteris obliqua (Brongn.). From the Waldershare Serie9 at 



2402 feet. No. 1916. X A. (See p. 26.) 



4. Odontopteris lindleyana, Sternb. From the Waldershare Series at 



1873 feet. No. 1917. X A. (See p. 27.) 



5. Cardiocarptis acutus, L. & H. From the Waldershare Series at 



2425 feet. No. 1918. X 2. (See p. 29.) 



6. Mariopteris muricata (Schloth.) var. nervosa ('Brongn.). From the 



Waldershare Series at 1830 feet. No. 1919. X f-. (See p. 28.) 

 7 Neuropteris tenui folia (Schloth.). From the Waldershare Series at 



1407 feet. No." 1920. X f. (See p. 26.) 

 8. Sphenopteris neuropteroides (Boulay). From the Fredville Series at 



1458 feet. No. 1921. x A. (See p. 29.) 



Discussion. 



The President congratulated the Author on his definite determi- 

 nation of the age of the Dover Coal-Measures. The absence of the 

 Stephanian, which was in harmony with what was known of other 

 British coalfields, seemed to suggest that in these islands the 

 Armorican movements had already commenced at the close of the 

 Westphalian Epoch. If so, additional time would be afforded for 

 the extensive denudation indicated by the unconformable relation 

 of the Permian to the Carboniferous. Great as this unconformity 

 undoubtedly was, the strata that might be taken to represent it, in 

 regions where sedimentation was continuous from the Carboniferous 

 to the Permian, were by no means so thick as geologists might 

 naturally have expected. 



Prof. Hull said that he had listened with much interest to the 

 Author's statement regarding the plant-remains of the concealed 

 coalfield of Kent, and greatly admired the forms thrown on the 

 screen. With regard to the relations of the coal-seams proved at 

 Shakespeare's Cliff near Dover, and those recently discovered at 

 Waldershare and Eythorn, he gathered that they were almost on 

 the same geological horizon ; and that, while the seams at Dover 



