ERRATIC BLOCKS OP THE BRITISH ISLES. 101 



(c) Lying loose, Galley Gill plantation, Silksworlh : — 

 Coarse porphyrite. 



((/) Gravel and sand-pit, Haverley House, near Seaton : — 

 Flint. 



(<?) Lying loose, Stotfold, near Seaton: — 

 Whin Sill. Granite. 



(/) Boulder clay, Salterfen Rocks, coast south of Sunderland: — 

 Volcanic series of Borrowdale. 



(g) Boulder clay, Carley Hill, near Sunderland: — 

 Volcanic series of Borrowdale. Greywacke. 



(h) On the shore, Beadnell : — 

 Large boulder of Trachyte. 



(/) Boulder clay, Kenton Quarries, near Newcastle: — 



Threlkeld 'granite.' Cheviot granite. Cheviot porphyrite. 



(2) Reported by Dr. Smythe and Dr. Woolacott. 



(a) Lying loose, west of Seaton Station: — 



Coarse agglomerate (1 cubic foot). Basalt. Coarse granite. 



(b) Lying loose, near Sharpley Hall, Seaton: — 



Threlkeld ' granite ' (6 cubic feet). Sandstone. Whin Sill. Vol- 

 canic series of Borrowdale. Carboniferous limestone. 



(c) Lying loose, end of Green Lane, Sharpley Plantation, Seaton : — 



Whin Sill. Volcanic series of Borrowdale (3). 1 Greywacke. Granite, 

 grey. Threlkeld 'granite' (2 cubic feet). Sandstone. 



(d) Lying loose, Great Eppleton Plantation, near Warden Law: — 



Rhyolite. 



(e) Old gravel-pits, south-west of Warden Law: — 



Greywacke (several). Chert. Sandstone. Granite. Porphyrite. 

 Volcanic series of Borrowdale. Magnesian limestone. Car- 

 boniferous limestone. 



(3) Reported by A. Bell, Bishop Auckland. 



(a) Byers Green, Boulder clay, north-east of Bishop Auckland: — 



Grey granite (Criffel). Volcanic series of Borrowdale. 



(b) Near River Gaunless, a mile south-east of Bishop Auckland: — 



Shap granite. Volcanic series of Borrowdale. 



1 The numbers placed after some of the specimens refer to number of speci- 

 mens of that rock noted. The size of the specimen is given wherever it is 

 noteworthy. 



