ADAMSON: THE YORKSHIRE I50ULDER COMMITTEE. 303 



Note.- — It is said that a gentleman who lived formerly in the 

 house next to the church, had it placed there as a stepping-stone, 

 and obtained it from the clay excavated in the construction of the 

 Driffield Canal. 



39. On Mr. Holby's estate, about 150 yds. E. of Driffield 

 Parish Church are a number of boulders. Twelve of these average 

 1 ft. x xo in. x 8 in.; sub-angular to rounded; their composition being 

 Mountain and Liassic Limestones, Red Granite, Whinstone, and 

 Carboniferous Sandstone, the latter having the largest percentage; 

 no striae or groovings were observed ; they have been derived from 

 the Boulder Clay, which overlies the Upper Chalk in this district. 



Note. — This Boulder Clay has a wide difference in composition 

 and texture, and occurs in patches ; some is of a hard, tough blue 

 nature, whilst others are light-red to cream-coloured, with a large 

 percentage of sand, and a sprinkling throughout of rounded chalk 

 pebbles and angular flints. The latter species of clay are covered 

 with about 5 ft. of gravel. 



Reighton, near Filey. 



40. On the farm occupied by Mr. Beauvais, about half a mile 

 from the coast, is a boulder. It is 2 ft. 6 in. x 1 ft. 6 in. x 1 ft. 6 in. 

 out of ground; sub-angular; no striae; dark blue Whinstone; about 

 50 ft. above sea-level ; was taken out of a bed of Boulder Clay 

 overlying gravel in the neighbourhood. 



REPORTS UPON BOULDERS NEAR TANFIELD. 



Rev. R. A. SUMMERFIELD, B.A. 

 Vicar of North Stain ley. 



In parish of West Tanfield, on left bank of River Ure, longitude 

 i° z?> 55 r/ ) latitude 54 n' 47", is a large boulder, 12 ft. 6 in. x 7 ft. 

 xi ft. 9 in. above ground ; triangular ; it has never been moved 

 by man, its longest axis is N.N.E. — S.S.W., it is highly polished, with 

 a few slight striae on the sides in the direction of longest axis ; 

 Mountain Limestone containing numerous specimens of Producti 

 and Turbinolia; it is embedded in gravel, which I removed to the 

 depth of 18 in. without finding the base of the boulder. 



On a little green outside the village of Thornborough is a 

 boulder, longitude i° 33' 10", latitude 54 12' 41", 3 ft. 9 in. x 

 2 ft. 5 in. x 1 ft. 10 in.; subangular ; with rounded ends; was 

 removed to its present position about 50 years ago, from a field in 

 the vicinity; top and sides smooth but not striated; fine Gritstone. 



Oct. 1889. 



