254 REPORT— 1902. 



boulders of the quite unmistakable augite-syenite (laurvigite) of 

 Larvik, and upon inquiry at the coastguard station the writer was 

 informed that in the last ten years several Norwegian sailing-ships have 

 been wrecked upon that particular piece of shore, so it may safely be 

 assumed that these stones came as ballast. If they had been ice-borne 

 boulders they would certainly have been accompanied by their invariable 

 associates in the English glacial deposits, the rhomb-porphyries, which 

 extend in Norway over a much wider outcrop than that of the laur- 

 vigites. Flints of the type found in the south of England are also very 

 abundant on the beach at Dunbar. 



Yorkshire. 



Communicated by the Yorkshire Boulder Committee, 

 Reported by W. Gregson, F.G.S. 



Aldfield, five miles west of Eipon. — 



1 diabase 11 in. by 7 in. by 5 in. 



600 feet O.D. on millstone grit. No angles. 



Reported by P. F. Kendall, F.G.S. 



Escrick, near York. — Several boulders of a Carboniferous limestone 

 containing many brachiopods have been found here which are quite 

 unlike anything I know in the Craven area. Mr. W. Horn, of Leyburn, 

 says they are different from any limestone in Wensleydale, and suggests 

 Swaledale as their place of origin. A single specimen had previously 

 been submitted to me from the same locality of a yellowish very crystal- 

 line limestone, which I recognised as identical in colour and structure 

 with that forming the matrix of specimens of Woodocrinus from the 

 famous quarry near Richmond. The corroboration is interesting and 

 may be valuable, as no distinctive Swaledale rock had previously been 

 found in the Vale of York. The specimens were all found by Mr. E. M. 

 Baines. 



Coxioold. — In a quarry beside Shandy Hall and in digging foundations 

 for a house a little nearer the village the erratics consisted mainly of 

 Carboniferous sandstone, limestone, and chert, with a few small boulders 

 (up to about 8 inches in diameter) of Borrowdale andesite. A special 

 search was made for Cheviot porphyrites with negative results. 



Kilburn. — At corner of a road \ mile S. of the village, Borrowdale 

 andesitic ash containing many garnets. Roadside heap in the village, 

 1 Shap granite. 



Reported by Rev. E. Maule Cole, M.A., F.G.S. 



Carndby. — In digging a hole for a gate-post in the main street of the 

 village on high road between Bridlington and Di-iffield. 



1 Whin Sill 22 in. by 19 in. by 12 in., polished and flat. 

 The boulder now lies by the roadside opposite the blacksmith's shop. 



Reported by H. B. Muff, B.Sc., F.G.S. 



The following boulders from East Yorkshire have been identified by 

 B. N. Peach, Esq., F.R.S., F.G.S., and E, H. Cunningham -Craig, Esq., 



