498 UNDESCRIBED FOSSILS FROM THE LONDON CLAY. 



small oviform bodies. The base of this and the two preced- 

 ing specimens presents a rough appearance, as if it had been 

 attached to a branch or stem. 



Fig. 9. — Leaf-shaped, flattish, edges rounded, upper end 

 rough, length two inches and a quarter, breadth nearly one 

 inch. Dividing at the basis into two flat processes, the up- 

 per one crossing obliquely over the under. 



Fig. 10. — This singular fossil is remarkably thin. It ex- 

 pands very much at its upper part, which is curved downward 

 and to one side. On its surface are a number of small ribs, 

 passing parallel to each other but at unequal distances, curving 

 with the fossil, and meeting nearly together at the top. From 

 the lower part on the right side a small branch is given off. 



Fig. 11. — A flattened stem dividing about midway into two 

 or more compressed branches. 



Fig. 12. — View of a polished transverse section, showing 

 the internal structure. 



Fig. 12 a. — Magnified view of a portion of the above. 



Fig. 13. — View of a polished longitudinal section of a leaf- 

 shaped fossil, showing its internal structure. 



Fig. 14. — View of a polished transverse section. On exa- 

 mining the centre of this specimen, a magnified view of which 

 is given at fig. 14 a, it appears as if a group of the same kind 

 of oviform bodies had been cut through, which, in the descrip- 

 tions of many of the preceding figures, have so frequently 

 been noticed as occurring on the outer surface. This group 

 is surrounded with curved lines, similar to those represented 

 in the section of fig. 12. 



Fig. 15— Round, about the size of a goose-quill, and 

 curved spirally, terminating at its lower part in four or five 

 small rounded processes. The upper end has a rough sur- 

 face, as if it had been broken. 



This specimen was found near Kilburn, by my friend H. 

 B. Burford, Esq., of Lisson Grove. 



At page 17, vol. ii. of the 4 Proceedings of the Geological 

 Society,' is a notice of a paper by Mr. Richardson, on the 

 coast-section from Whitstable to the North Foreland. The 

 sketch of this paper which is given in the Proceedings con- 

 cludes as follows. — "A minute description is given of the 

 Septaria which are said to be very numerous, and to have 

 the surface often covered with small ramifications, resembling 

 branches flattened by pressure." 



In this sketch no mention is made of anastomosing branch- 

 es, nor is anything said of the small oviform bodies which 

 have been so constantly met with in my specimens. Again, 



