GRAVEL NfiAR NEWARK, DERBY, AND LITCHFIELD. 195 
situ is the neighbourhood of Shap, just mentioned, from which they 
are at present separated by the lofty ridge and escarpment of Cross 
Fell and Stainmoor Forest. If the difficulty of transporting them 
over this barrier be thought too great, the only remaining solution 
will be that they have come from Norway, like the other pebbles 
before mentioned, as abounding in the diluvium of the whole east 
coast of England. 
In the valley of the Trent, north-east of Newark, I have noticed 
a similar admixture of pebbles of primitive and transition rocks, with 
rounded and with angular chalk flints, that may have come from the 
wolds of Lincolnshire. At Chellaston also, on the south of Derby, 
higher up in the same valley, I found the gypsum quarries to be 
buried beneath a thick bed of diluvial clay, through which are dis¬ 
persed angular fragments of has, oolite, hard chalk, and chalk flints, 
drifted from no great distance, and confusedly mixed with highly 
rolled pebbles of quartz, and other transition rocks. 
Mr. Farey, in his Agricultural Keport of Derbyshire, gives a long 
and interesting list of the deposits of gravel in that county, from 
which it appears, that fragments of all the English formations, from 
granite upwards to chalk, are accumulated abundantly in the form of 
diluvial gravel in that midland part of England, and I have myself 
found plenty of chalk flints in the gravel pits three miles north-west 
of the town of Derby. 
It is mentioned, in a paper by Mr. Aikin, on the gravel at Litch¬ 
field, in the 4th vol. of the Geological Transactions, that he found 
near that town pebbles of granite, syenite, greenstone, schist, lime¬ 
stone, quartz, chalcedony, and hornstone : amongst these the pebbles 
c c 2 
