ROCKS OF NORMANDY. 259 
of La Manche, near Beuzeville-les-Veys and Montmartin-en- 
Graignes. In this extension it is bounded on the north by Liassic 
districts, and on the south by the Paleozoic area. Knipe’s map 
gives its breadth, south from Isigny, as nearly six miles, and north 
of Littry as nearly three miles; on the west of Littry two (Infra) 
Liassic outliers are shown; and three, apparently Carboniferous, 
inliers are indicated between the same village and Trévicres to the 
north of it (some miles off). 
I drove out from Bayeux for fourteen kilometres along the road 
to St. Lo, stopping to examine all the sections visible en route; then 
turning northward, returned to Bayeux by a road nearly parallel to 
the railway on the north side, having almost crossed the Triassic 
area from south to north. The following are the observations made 
in this circuit:—On the road to St. Lo, near Sables, a large quarry 
exposed (Infralias) limestones, whitish and arenaceous in the upper, 
bluish and even-bedded in the lower part of the quarry, and alter- 
nating with thick beds of dark bluish clay. 
In a small pit near the hamlet of Agy red marly clay mottled 
with grey, apparently the soil of Triassic marls, seemed to be faulted 
against Lias. 
By the road from Bayeux to St. Jean de Daie, on the north side 
of the road, at a point to the north of Campigny, 12 feet of soft buff 
sand with small quartzite pebbles was noticed; chalk or decomposed 
flint appeared to be amongst the ingredients. Near this a pit by the 
road displayed about 15 feet of buff and yellowish sand, stained 
reddish by ferruginous infiltration in irregular bands; no pebbles or 
coarse materials were present. ‘The section strongly reminded me 
of some Upper-Greensand exposures on the Blackdown Hills. This 
sand may possibly be of Triassic age, or a redeposit of Triassic sands, 
though both sections might be referred to the grey diluvium of La 
Manche in the absence of corroborative evidence. 
In an extensive brick- and tile-yard to the south of the railway, 
near La Mine, I recognized a large pit of marls, red, with greenish mot- 
tling, and passing upwards into asandy clay used for the manufacture 
the bricks and tiles, and just the same in character as the upper 
marls of Somerset in the brick-pits of Taunton and Wellington. 
This marl seemed to rest on the Paleozoic rocks of the valley of the 
river Merdillon, which are Carboniferous, according to Knipe. 
From this point northward the ground descends to extensive 
flattish alluvial tracts concealing much of the Triassic area to the 
north of the railway. 
The road to Bayeux, to the north of Saon, appears to be covered 
by diluvium, apparently in part resulting from the redeposit of 
Triassic gravels and marls, and containing fragments of flint towards 
Bayeux. 
Mr. Linford, of Exeter, to whom I am much indebted for verbal 
information, copied out and sent me all the extracts bearing on my 
subject from a correspondence he had kept up with a friend at Caen. 
From these I select the following notes :— 
Deposit of May gravel near Evrecy, where it is capped by Lias.” 
