ON THE ERRATIC BLOCKS OF ENGLAND, IRELAND, AND WALES. 239 



No special record is needed of individual examples of these. 



(B) Blocks from the north of England. — Next in abundance to the 

 blocks of local Oolite are those from the basaltic dyke of the Cleveland 

 district. Mr. Clough Veritas : ' This dyke has now been traced right 

 across the country, N.W. to near Carlisle, and keeps much the same 

 character throughout. There are also a few other dykes of much the 

 same character in the N. of England.' 



Marsh Lane, left of road, Ingleby, 1 ft. 6 in. x 1 ft. 1 in. x4 in. Ba- ■ 

 Baltic dyke of Cleveland district. 



Ingleby Vicarage Garden — Dolerite, 1ft. X 10 in. X 6 in. Sub-angular. 

 Extremely like one of the medium-grained vai'ieties of the Whin Sill 

 of Upper Teesdale and Weardale, and probably from the former dis- 

 trict. 



(C) Blocks from the Cheviot Hills and adjoining districts of the south of 

 Scotland. — Ingleby Mill Dam, 1 ft. 6 in. x 8 in. x ? Sub-angular. Old 

 andesite. Possibly from Cheviots, but not a common type there ; and 

 Mr. Clough thinks more probably iVom some of the other porphyritic 

 areas in S. of Scotland. 



Ingleby, 10 in. x9 in. x 5 inj Porphyritic felsite. Might be from 

 Cockburn Law (the Lammermoors) or from various other places in south 

 of Scotland. 



Ingleby — Wall on top of Vicarage Garden, 9 in. x 5 in. x 3 in. Sub- 

 angular. Might well be from the Lower Old Red porphyrite district of 

 the Cheviot Hills. 



Right of road leading down to Ingleby Church, 1 ft. 6 in. x 1 ft. 10 in. 

 Old augite-andesite. Like a type of the Lower Old Red porphyritic flow 

 of the Cheviot Hills. 



Ingleby Vicarage Garden, 1 ft. x6 in. x 6 in. Porphyrite. A common 

 type of dyke in the Lower Old Red porphyrite district of the Cheviot 

 Hills. 



Stream below Ingleby Church, 7 in. X 5 in. x3 in. Sub-angular. 

 Very like the Lowest Old Red porphyrite flows at the head of Coquetdale, 

 Cheviot Hills. There are also dykes of much the same character in that 

 district. 



Stream below Ingleby Church, 10 in. x 7 in, x4 in. Sub-angular, Old 

 andesite. Ihid. 



Ingleby Mill Dam, 1 ft. 1 in. x6in. x ? Like a common type of 

 intrusive dyke in the Lower Old Red porphyritic district of the Cheviot 

 Hills ; but there are probably other exposures of similar rock in S. of 

 Scotland. 



Ingleby Mill Dam, 9 in. x 7 in. x 2 in. Sub-angular. Might well be 

 from Lower Old Red porphyrite district of the Cheviot Hills. 



Ingleby Mill Dam, 6 in. x 4 in. x ? Porphyrite. Ihid. 



Ingleby Mill Dam, 10 in. x 6 in. x ? Porphyritic basalt. Might be 

 from some of the similar basaltic blocks of the Border country. 



Ingleby Mill Dam, 10 in. x 7 in. x ? Old augite-andesite. Like 

 portions of lower porphyritic flow at head of Coquetdale. 



Ingleby Mill Dam, 1 ft. 3 in. x 8 in. x 8 in. Old andesite. Extremely 

 like a very common type of Lower Old Red porphyrites of Cheviots. 



Ingleby Mill Dam, 1 ft. 4 in. xl ft. 2 in. xl ft. 1 in. Porphyrite. Ihid. 



Ingleby Mill Dam,l ft. 1 in. xll in. x5 in. Hornblendic porphjrite. 

 A very common type of dyke in the Lower Old Red porphyritic district 

 of the Cheviots. 



