ERRATIC BLOCKS OF THE BRITISH ISLES. 171 
(e) From pebble bed, Shilvington Slack, near Whalton, Northumber- 
land :— 
Cheviot granite. Basalt. Greywacke. 
(/) From boulder clay, Braid Hill, Callerton, Northumberland :— 
Threlkeld granite. Decomposed Criffel granite. 
(g) From boulder clay, How Burn, near Foulmartlaw, near Bolam, 
Northumberland :— 
Coarse granite with porphyritic felspar. 
(kh) From boulder clay, River Blyth, near Thorneyford, three miles 
north of Ponteland, Northumberland :— 
Criffel granite. 
(() From boulder clay, Gurry’s Point, Monkseaton, Northumber- 
land :— 
Volcanic series of Borrowdale. Granite. Cheviot porphyrite. 
(j) From boulder clay, Coast near Brier Dene Burn, Monkseaton, 
Northumberland :-~ 
Cheviot porphyrite. Basalt. Diorite. Several granites. 
(k) From boulder clay, Kenton Quarry, near Newcastle :— 
Threlkeld granite. Armboth Dyke. Volcanic series of Borrowdale. Coarse 
i grey and red granite. Eurite (Cheviots ?). Purple Cheviot porphyrite. 
(!) From boulder clay, Brunton Quarry, near Newcastle :— 
Volcanic series of Borrowdale. Greywacke. Cheviot granite, 
(u.) Reported by Dr. Wooxacorr. 
(a) From Grindon Kaim, near Sunderland :— 
Cheviot granite. Red granite. Borrowdale volcanic series. Quartz pebbles. 
Greywacke. Felsite. Carboniferous limestone. Felspathic grit. Iron- 
stone. Coal. Quartz porphyry. Cheviot porphyrite. Whin Sill. Basalt. 
Numerous pieces of Magnesian limestone —some of the cannon-ball and 
other concretionary types. 
(b) From boulder clay, Whitley Bay, Northumberland :— 
Volcanic series of Borrowdale. Cheviot porphyrite. 
(c) From boulder clay, quarry near Horden, Durham :— 
Volcanic series of Borrowdale. 
(d) From raised beach, Cleadon, near Sunderland :— 
Piece of chalk. Black flint with chalk attached. Several flints. 
(e) From boulder clay, The Flats, North Shields :— 
Cheviot porphyrite. 
(f) From boulder clay, Hendon Banks, Sunderland :— 
Cheviot porphyrite. 
