114 REPORT— 1880. 



blocks were Lower Keuper sandstone ; two, oolitic limestone ; one green- 

 stone ; two, white quartz (altered millstone grit) . They were 400 feet 

 above the sea-level, and spread over an area of about 30 yards. The 

 group was derived from Nuneaton 14 miles W., Oakham 20 miles N.E., 

 Hartshill, 15 miles W., Croft 4 miles W. 



In the village of Oadby is a group of rounded blocks of granite from 

 Mount Sorrel 9 miles N. The largest is 2 X 1 X 2 feet ; the smallest, 

 1 ft. 6 in. X 1 ft. X 1 ft. They are exposed on the surface, but may have 

 been moved in making the road. They are 400 feet above the sea-level. 



In Abbey Meadow, Leicester, in making the new river, a rounded 

 boulder of chert, about 2 feet cube, was found. It was probably derived 

 from Matlock, 30 miles to the N.W., and was about 120 feet above the sea- 

 level. 



In lowering a hill on the road near Aylestone, five blocks of syenite 

 were found, the largest being 3 ft. x 2 ft. 10 in. X 2 ft. 8 in. They were 

 sub-angular and angular ; and derived from Groby, 5 miles to the N.W. 

 They were 230 feet above the sea-level, and suri-ounded by sandy gravel. 



At Lodge Farm, on the bridle road to Ridgeway, a group of boulders 

 occurs ; the largest being 2 ft. 6 in. x 2 ft. X 1 ft. 6 in. ; the smallest, 1 foot 

 cube. They are angular and subangular, and are scattered in a line for 

 about 200 yards. They are composed of granite from Mount Sorrel, 5 miles 

 off to the N.W., and are about 300 feet above the sea-level. They rest on 

 the surface, but are in connection with a long ridge of drift. 



Devonshire. — Mr. Pengelly favours the Committee with the subjoined 

 Report respecting some very remarkable transported blocks and accumu- 

 lations of blocks which he has observed in South Devon, the transportation 

 of which it does not seem possible that the action of water alone could 

 have effected. 



I. — The Granitoid Boulders on the strand hetiveen the Start and Prawle 



Points, South Devon. 



On July 25, 1865, Mr. W. Vicary and I observed two granitoid 

 boulders on the strand between the Stai-t and Prawle Points. They were 

 well rounded, and totally dissimilar to any rock in situ in the district. 

 The larger measured 36 x 36 x 16 inches, and contained a considerable 

 amount of granular schorl ; the smaller one was nearly as large, of finer 

 grain, and not schorlaceous. 



The larger of these blocks cannot weigh less than '75 ton. Their 

 rounded forms may have been acquired since their lodgment on their 

 present sites, as they must be exposed to the action of the waves at least 

 every spring- tide storm. It is not improbable that the masses themselves 

 may have been derived from submarine granitoid rocks in situ, at no great 

 distance.' 



II. — The Block of Greenstone in the Village of Kingston, South Devon. 



Whilst passing through the straggling village of Kingston, nearly 

 three miles, as the crow flies, S.S.W. from Modbury, South Devon, on 

 September 28, 1877, I observed in the highway, very near a gateway 

 leading to an adjacent dwelling-house, a ' greenstone ' boulder, irregularly 

 spindle-shaped, and measuring 4x2x2 feet, and therefore weighing up- 

 wards of a ton. 



' See Trans, Devon. Assoc, xi. 330-1. 



