1859.] SALTER PAEADOXIDES. 551 



At Fisher's-Gill Farm, a short distance from Quarry-Gill, is a 

 well sunk through the Lias-shales into the limestone. 



At Thomby Brook, south-east of Aikton, are the Lias -shales 

 first found by Mr. Brockbank. They are seen in the brook's course, 

 and are not exposed more than 2 feet in height and for a distance 

 under 100 yards in length, being covered up by a thick deposit of 

 reddish- coloured Till. In these shales are found several species of 

 Ammonites, which break in pieces on being taken out of their ma- 

 trix, and two or three species of bivalve shells. Ironstone-nodules 

 containing bivalve sheUs also occur in the shales. The dip of the 

 shales is difficult to determine with certainty ; but at one place it 

 appeared to me to be 23° to the W.S.W. Specimens of the fossils 

 from Thornton Brook are sent herewith. 



Mr. Robinson, an intelligent well-sinker in Kirk Bampton, in- 

 formed me that in the course of his searches for water he had be- 

 come well acquainted with the dark shales and limestones in which 

 people had long been searching for coal. This he had often heard 

 as having been found, but he had never seen it himself, and indeed 

 never expected to do so. At Wiggonby a bore-hole had been put 

 down 40 yards into the dark shales. At Bank House the same beds 

 are to be seen near the surface. They have also been met with at 

 the Piatt and Nut- Gill. At Oughterby Pastures they are seen in the 

 water-holes which have been dug in them. At Orton Sir W. Briscoe 

 bored in them. He thinks that they have also been met with 

 both in Crofton and Aikton. Thus it appears, from Mr. Robinson's 

 information, that this Lias-deposit occupies a considerable district, 

 extending under the rising ground between Crofton and Orton, on the 

 south, and the Solway, on the north, comprising Aikton, Thornby, 

 Wiggonby, Oughterby, and probably other places on the rising 

 ground between the Carlisle and Maryport and Carlisle and Port 

 Carlisle Railways. As the country is covered up with a thick de- 

 posit of TiU, and there are no natural sections, the boundaries of 

 the Lias wiU be difficult to trace with certainty ; but to me it ap- 

 pears to lie on the " Waterstones " and red marls of the Trias seen 

 in the Eden near Carlisle, and which appear to dip in the direction 

 of the Lias described in this short communication. It seems some- 

 what singular that so large an extent of Lias should have so long 

 escaped observation ; but it is no doubt owing to the district being 

 thickly covered with Till, and affording few (if any) natural 

 sections. 



2. On the Fossils of the Lingitla-elags or " Zone Peimoediale." 

 By J. W. Saltee, Esq., F.G.S., of the Geological Survey of Great 

 Britain. 



Paradoocides and Conocephalus from North America. 



The occurrence of an isolated new fossil, either at home or abroad, 

 is seldom worth illustration in the pages of our Journal, unless, as in 



