DAWES ON STERNBERGIA. 



91 



great body of water was discharged into the workings. The rock 

 disappeared abruptly. The chief fossil remains which were found 

 in the course of the tunnel works, were those before named, which 

 are now in the possession of the Society. 



The excavation at the western end of the tunnel, from whence 

 the specimen of Lepidotus Mantelli was obtained, was full of 

 faults and displacements, the strata dipping in various directions 

 from W. by N. to E., and at almost every angle from 5° to 60°. 

 This state of things caused much trouble on the south side of the 

 excavation, by the continual slipping in of the earth ; but on the 

 north side no slip took place, and the slope stands apparently well. 

 At the western end of the excavation, the ordinary dip was about 

 13° N. 



In this cutting there were beds of sandstone, bearing a very 

 strong ripple mark ; these beds partook of the general disturbance. 



The well-known displacement of the beds of the lower green 

 sand, exposed on the road-side near the top of Tilburstow Hill, is 

 about one mile and a quarter north-east of the excavation I have 

 been describing. 



3. Remarks upon Sternbergije. By John S. Dawes, Esq., F.G.S. 



a. Fragment of Sternbergia, showing the internal central structure apparently 

 lamellar. 



b. Portion of the branch of a walnut tree, showing somewhat similar structure. 



In the autumn of 1838 certain specimens of vegetable remains 

 were discovered in the coal grit at Oldbury, near Birmingham, 

 which appeared to show, very distinctly, the internal structure of 

 those remarkable fossils, the Sternbergise. The circumstance was 



