526 Correspondence. 
THE BLOODY STONE. 
To the Editor of the GEoLocicaAL MAGAZINE. 
Sir,—The paper by Mr. Green in the last number of the Groio- 
GICAL MaGazinE on the supposed ice-marks on the Bloody Stone, 
between Cromford and Bonsall, led me, as Mr. Mackintosh’s letter 
had led him, to pay a visit to the spot, in hopes of discovering some- 
thing more. My hopes in that respect were however not realised ; 
but I saw what Mr. Green saw, and tried to take some rubbings 
from the smoothest parts of the grooved rock I could find. I send 
them to you with this, in case they should prove an additional help, 
in the absence of better, towards solving the question whether the 
markings are glacial or not. The three large rubbings are from 
different parts of the surface marked F in Mr. Green’s ground-plan, 
two of them (the two smaller) were taken close to where the line HK 
cuts the rock. The small rubbing is from a fragment of the rock 
near D, it is well polished, and the grooves were nearly at right 
angles to the footpath. I have sketched in the rest of the specimen 
in order to show the distinct division between the chert and the 
Limestone. The grooved rock could be traced some way beneath 
the path by clearing away the earth and stones, and more could be 
seen in other places by removing the turf. I could discover no 
further traces of ice-work in the neighbourhood. <A rough obser- 
vation taken with a pocket aneroid gave about 246 feet as the height 
of the Bloody Stone above the toll-gate at the foot of the bridle- 
path to Bonsall, and I should think the Stone would be about 
300 feet above the Derwent. May the rounded form of the hill be 
due to ice-work? ‘The opposite side of the dale consists of steep 
and well-wooded Limestone cliffs. A small stream widened into 
ponds runs along the bottom of the dale. The bearings laid down 
on the rubbings are magnetic.—I am, &c. 
J. Macrus Metto, M.A., F.G.S. 
Sr. Toomas’ Parsonacs, BRAMPTON, 
CHESTERFIELD: Oct. 7, 1865. 
Norr.—We have received the rubbings of ice-markings referred 
to above, and also a general sketch of the locality, and regret that 
want of space does not admit our reproducing them here: The 
rubbings of the striz present all the appearance of having resulted 
from ice-action.—Ep1r. 
GLACIATION IN DEVONSHIRE. 
To the Editor of the GEOLOGICAL MAGAZINE. 
Dear Srr,—In connection with the interesting record made by 
Professor Jukes in the October number of the GroLogicaL MaGa- 
ZINE, I would briefly notice the existence, in North Devon, of what 
appears to be an extensive deposit of Boulder-clay. At the hamlet 
of Roundswell, a mill to the SW. of Barnstaple, a well was sunk in 
1862 by Mr. J. Bowden through a thickness of 40 feet of clay, the 
