ON THE ERRATIC BLOCKS OF ENGLAND AND WALES, 199 
(6) I believe they are derived from all points of the compass, some pos- 
sibly from Scandinavia, &e. Metamorphic and volcanic rocks are numerous, 
The most abundant are the quartzites and siliceous pebbles (Budleigh- 
Salterton pebbles) with fossils (Orthis reduw, Lingule, &c.). Carboni- 
ferous sandstones and mountain-limestones occur. Not much Lias, and afew 
pieces of oolite (Great Oolite and Cornbrash) with characteristic fossils, 
In one small field in Rowington numerous oolitic rock-fragments with 
chalk and flint and older rocks occur. Felstone (Cumberland or North Wales) 
recognized ; voleanic rock (The Wrekin, Salop) recognized ; peculiar amyg- 
daloid granite (Malvern ?). 
7. Primitive limestone, porphyritic greenstone, trap, volcanic grit, several 
varieties of granite, syenite, hard siliceous grit (abundant), pebbles of quartz, 
jasper agate (numerous), crystalline and schistose slate, sandstone pebbles, 
felstone, dolerite (varieties of). 
Chalk (hard and soft, the former predominates), Cornbrash, forest-marble, 
Great Oolite, Lias, Magnesian limestone, Mountain-limestone, chert (Carboni- 
ferous), Millstone-grit, Permian wood, Calymene in nodule (?), Lower-Silurian 
fossiliferous pebbles. All the above are fossiliferous. 
See, on the drift in Warwickshire, Proceedings Geological Society and W. 
N. Field-Club, 1866, by Rev. P. B. Brodie. Later ‘Proceedings’ will also 
give an account of drift near Coventry by Messrs. Whitler. A list and full 
account of drift in both, Geol. Proc., 1857. 
8. The height of the group above the sea is about 400 feet or more. Can- 
not state this positively. 
9. In reply to No 1, many miles, 
10. Sometimes exposed on surface in fields, and in the gravel (drift) pits 
in district. 
It must be remarked that the stones called “ boulders” in this communi- 
cation are not of the same size and character as the glaciated boulders scat- 
tered over Staffordshire and other neighbouring districts. Attention is called 
to the quartzose pebbles with certain Lower-Silurian fossils which predominate 
in the drift of this district. Orthis redux, so common in Devon and Nor- 
mandy, is the most frequent fossil in these pebbles, although fossils are few 
and far between. The question raised is whether they really have drifted, or 
whether an old Lower-Silurian centre once extended in this direction, 
Devon. 
Mr. Widger reports travelled boulders at Bishop’s Steignton parish, Lind- 
ridge Estate, Coombe Farm near Teignmouth, Devon, from 6 inches to 4 
feet in diameter, 300 feet above the sea. 
That very great interest attaches to boulders in Devonshire, appears from 
Mr. Pengelly’s remarkable description of the granite boulder on the shore of 
Barnstaple Bay, North Devon, given in last year’s Report. It is hoped that 
Mr. Pengelly will favour the Committee by carrying on his investigations 
and contributing them to next year’s Report. 
Liayrwst. 
Mr. Norris reports as follows :— 
1. Boulder at Llanrwst, Gorphwysfa, co. Denbigh, one mile N.E. of town 
next to Cae Brachina. 
2. (1) Conical stone, height 7 feet 6 inches, greatest circumference 10 feet, 
tapers to a point. (2) Height 5 feet, circumference 9 feet. 
3. (1) Angular siliceous conglomerate, rough fracture on two sides at right 
