7 2 Mr. N. J. Winch on the Geology of 



2. Madrepora. See Parkinson, vol. 2. tab. 6. fig. 3. in the same 

 limestone, and in a stratum resembling it in colour, situated on both 

 banks of the Tyne near Glenwhelt. 



3. A grey limestone may be observed in detached masses on the 

 high banks above the East Allen composed almost entirely of a fossil 

 called madrepora fiexuosa. See Parkinson, vol. 2. tab. 6. fig. 8. The 

 same rock also occurs above the bridge at Simonbourn. 



4. Millepores, in a brown limestone from the neighbourhood cf 

 Aldstone. 



5. Vertebral columns of the cap encrinite. Parkinson, vol. 2. 

 tab. 8. fig. 4. ; from the same rock and locality as 2. 



6. Bivalve shells from the same rock and locality as 2. 



7. Pectinite and large ostrese. In the cockleshell limestone, and 

 in the blue limestone quarried at Newton-Hall near to Corbridge. 



In the shale, 



1 . Calcareous casts of the vertebral columns of the cap encrinite ; 

 (St. Cuthbert's beads) Parkinson, vol. 2. tab. 8. fig. 4. In Allendale, 

 Weardale, &c. On the banks of the Greta, and in a stratum above 

 Tecket water-fall near Simonbourn : also on the shores of Holy 

 Island. 



2. Impressions of pectinites about \\ inch in diameter: Aldstone 

 moor. 



3. At Hairshaw and at other places on the North Tyne the shale 

 contains nodules of clay ironstone, and small muscle shells filled with 

 the same ore. 



/;/ the sandstone. 

 1. Impressions of pectinites on hard slaty sandstone (hazle) in 

 Allendale. 



