Correspondence. 473 
under a broken shelf of the same, we found a portion of a human 
lower jaw, together with a human caleaneum. ‘These latter remains 
from their position may be of the date of the worked flints, or they 
may be of any date greater or less than a few hundred years since. 
The determination of the bones is due to Mr. Sanford. 
Trenspy: August 22, 1865. H. H. Winwoop. 
GLACIATION IN DEVON AND ITS BORDERS. 
To the Editor of the GkEoLocicaAL MAGAZINE. 
Sir,—I do not know whether anything has been published about 
ice-marks ou the rocks of Exmoor, Dartmoor, or the other hills of 
the West of England. Perhaps, therefore, you will allow me to 
put on record a case of glaciation which I met with yesterday, as 
striking as any in the Killarney or Glengariff country in the south- 
west of Ireland. It is on the banks of the river Exe, about a mile 
and a half north-east of this little town, and about a quarter of a 
mile north of the ruins of Barlynch Abbey. The Exe runs rapidly 
down a beautifully wooded glen some 400 feet deep, and makes a 
sharp turn at the point indicated, where a mass of hard grits in the 
upper part of the true Old Red Sandstone juts out to the west, 
dipping south, and showing a steep little escarpment looking 
north up the valley. At the extreme point of this crag, where the 
valley is contracted to a quarter of its usual width, part of the face 
of the rock, 20 yards long and 20 feet high, looking up the river, is 
grooved, polished and scratched in parallel lines, nearly horizontal, 
but slightly inclined towards the bed of the river. It looks like a 
gigantic cornice-moulding, some of the more prominent ribs about 
2 or 3 feet apart, others only 6 or 8 inches, but all undercut with a 
sharp symmetrically-rounded fluting to a depth of from 3 to 4 
inches. The surfaces between the most prominent cornices are 
more slightly fluted, with lesser ribs, and the whole smoothed over 
with parallel rubbing-marks, exactly as may be seen at the sides of 
a modern glacier wherever a projecting crag intrudes itself into its 
course. 
The absence of anything like boulder-clay, and the rarity of far- 
transported boulders, are circumstances in which this district also 
resembles the Killarney and Glengariff country, as well as in the 
identity of the rocks and character of the scenery. 
Dutverton: Sept. 19. J. BEETE JUKES. 
PRIMARY AND SECONDARY GLACIAL STRIA. 
To the Editor of the GkoLtocicaL MaGazine. 
Srr,—It is rather remarkable that none of the writers on Glacial 
Phenomena have mentioned Primary and Secondary sets of Stric as 
having been observed in the localities of which they have given 
descriptions ; and that they do not occur would appear to me rather 
remarkable, as in all the places in Ireland that I have carefully 
examined I found them. 
The Primary Strie and Grooves in this country have a general 
