284 REPORT— 1901. 



encouraging to the hope that any positive identification of the Cheviot 

 granite can be made. The results of a fuller examination will be presented 

 in the next report of the Committee. Meantime it may be remarked 

 that the striking disproportion which must exist between the boulders of 

 the Cheviot granite and those of the porphyrites will perhaps find an 

 explanation in the conditions which prevailed in the Cheviots themselves 

 during the time when the distribution of the erratics was in progress. 



Mr. Stather's numerous records of greywackes of a similar type in 

 various parts of Yorkshire and on the lower slopes of the Cheviots sug- 

 gests the probability of their derivation from the basin of the Tweed. 

 Two very I'emarkable discoveries are reported by Mr. Fearnside. The 

 cravels of the Yorkshire Calder have long been noted for remarkable 

 uniformity in the character of the included stones ; besides local rocks 

 there had been found nothing but well defined types of Lake Dis- 

 trict rocks, andesites, agglomerates, and the granitic rocks of the 

 Buttermere and Eskdale types, all such as might have come by way of 

 Lancashire from the western side of the Lake District, and perhaps one 

 or two examples of the Galloway granites. Mr. Fearnside now adds the 

 Norwegian Rhomb-porphyry, Brockram, brown flints, and Shap granite, 

 discordant elements difficult to reconcile with the very consistent series 

 previously known. Mr. H. H. Corbett, of Doncaster, points out a singular 

 fact : the three boulders of Shap granite found respectively at Royston, 

 Adwick, and Balby have a vein of felspar running through each of them. 



The boulders recorded by Mr. Lomas from New Mills, Derbyshire, 

 are of the type usual on that side of the Pennine Chain, but the occur- 

 rence of Triassic pebbles is of great interest, as the altitude, 930 feet, is 

 several hundreds of feet above that of any Triassic rock t?t sifit in the 

 region. 



The boulders of nodular dolerite recorded from the Ayrshire coast 

 precisely resemble those which are found in considerable numbers in 

 Western Lancashire and Cheshire, especially in the Wirral. A single 

 example has been found from the north of Ireland. These rocks have 

 long been regarded as of Scottish derivation, and their great abundance 

 on the coast of Ayrshire seems to favour the supposition. It is to be 

 hoped that some geologist may be found in Glasgow who can identify the 

 rock and state its source. 



The Secretary has provided the Lincolnshire Boulder Committee with 

 a series of rock specimens from Norway and the Cheviots to serve as 

 types for the determination of the source of erratics, and he has still 

 remaining a large number of duplicate specimens of noteworthy Nor- 

 wegian rock (Rhomb-porphyries, Elieolite- syenites, ifec), rocks from the 

 Cheviots, the south of Scotland, and from the Lake District, which he 

 is prepared to distribute to local museums or to individuals willing to aid 

 in the work of this Committee. 



Cumberland. 



Reported by Mr. JoHX Carlton {Hull Geological Society) 

 j}er Yorkshire Boulder Committee. 



Skiddaiv. — On left of pathway to top of Skiddaw, about 30 yards 

 above second hut, 1,450 feet above Keswick, glacial strise were observed 

 on solid slate from which the turf bad beei> recently remove^i. DireCr 

 tionW.S.W, 



