122 



REPORT — 1889. 



(39) On Mr. Holtbj's estate, about 150 yards east of Driffield parish 

 churcli, are a nnmber of boulders. 



Twelve of these average 1 ft. x 10 in. x S in. ; subangular to 

 rounded ; their composition was mountain and liassic limestones, red 

 granite, whinstone, and Carboniferous sandstone, the latter having the 

 largest percentage ; no strisB or groovings were observed ; they had 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 arc 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 feet of gravel. 



Heigliton, 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 ; subangular ; no striae ; dark bine 

 whinstone ; about 50 ft. above sea-level ; was taken out of a bed of 

 boulder clay overlying gravel in the neighbourhood. 



Rev. R. A. Snmmerfield, Vicar of North Stainley, furnishes the 

 following reports upon boulders near Tanfield : — 



In parish of West Tanfield. on left bank of river Ure, long. 1° 33' 55", 

 lat. 54° 11' 47", is a large boulder 12 ft, 6 in. x 7 ft. x 1 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 strife 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 inches, without finding the base of the boulder. 



On a little green outside the village of Thornborough is a boulder, 

 long. 1° 33' 10", lat. 54° 12' 41", 3 ft. 9 in. x 2 ft. 5 in. x 1 ft. 10 in. Sub- 

 angular 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. 



Mr. W. F. K. Stock, F.C.S., F.I.C., public analyst for the County of 

 Durham, reports upon the Greystone, Manfield, N. Riding : — 



This boulder is in the parish of Manfield, Stanwick Estate, and on 

 the Greystone Farm (so called after the boulder), the nearest town being 

 Darlington ; 12 ft. 1 in. x 5 ft. 6 in. x 3 ft. 4 in. ; subangular ; longest axis 

 N.N.W. by S.S.E. ; its surface weathered to such an extent as to render 

 character of markings very doubtful. Felspathic trap ; specific gravity, 

 2'66, Its analysis gives — 

 Silica 



100-53 

 Although well known as the ' Greystone ' no legend is known to be 



