ON THE ERRATIC BLOCKS OF THE BRITISH ISLES. 375 
Per cent. 
50 Carboniferous Limestones . ; . 376 
28 Sandstones and grits of undoubtedly Carboniferous age rebel 
12 Sandstones, origin doubtful, but probably in part Carboniferous 9°0 
7 Magnesian Limestone . 4 ; : ; ‘ . 5:2 
15 Lias é . ‘ - ; i r 2 ; 5 alla 
21 + Basaltic rocks ‘ : ‘ 3 2 é : ° . 158 
133 100:0 
Only 3 small pebbles of granite were observed on the beach; no augite-syenite, 
Rhomb-porphyry, nor garnetiferous schist was observed here. 
Guisbro. In Abbey Gardens— 
2 Shap granite. 
Sneaton, altitude 400 feet. 
1 Shap granite. 
Reported by Mr. W. 8S. ParrisuH. 
Swanland, altitude 265 feet. 
Red granite; basalt; gritty sandstone. 
Reported by Mr, F. F, Walton, 7.G.S. 
Coniston, Holderness— 
1 Fine-grained white granite. 
Skirlauyh— 
2 Basalts. 
Preston in Holderness— 
5 Basalts; 1 dolerite. The main™street is paved with boulders of which the 
majority (75 per cent.) are basalts, and the remainder mostly Carboniferous 
sandstones. 
Reported by Mr. W. H. Crorts. 
Atwick— 
1 Shap granite. 
Reported by Mr. J. Nicuouson. 
Hornsea— 
2 Carboniferous Limestones ; 2 basalts; 1 dolerite. 
Flinton— 
1 Sandstone. 
IsteE or Mav. 
Reported by Rev. 8. N. Harrison, per Glacialists’ Association. 
Bride, on the shore— 
The two granites and a ‘ felspar-porphyry’ of Arran. 
