4^6 THE CRETACEOUS ROCKS OE BRITAIN. 
is crowded with shells of lnoceramus mytiloides. The outcrop of 
the rocky chalk makes a fairly-marked feature which can be traced 
southward toward Tat worth, and there is another large but rather 
shallow quarry opposite Tatworth vicarage, where 12 to 14 feet 
of similar beds are exposed, but in a more broken, weathered and 
rubbly condition. This chalk is cut off by a fault a little south of 
the quarry, which brings the Upper Greensand up to its level. 
Middle Chalk, however, comes in again on the high ground 
north-east of Chardstock, and is exposed in a small pit on the east 
side of the lane about two-thirds of a mile north-east of the church. 
This exposure is small, but is noteworthy, because I obtained from 
it a specimen of Am. [Acanthoceras] nodosoides, a species which is 
not very common, and has only been found in the zone of Rhyn¬ 
chonella Guvieri. 
I did not find any exposure of chalk near Chard which I could 
refer with certainty to the Terebmtulina zone, except on the 
hill north-west of Combe, where a pit shows the base of the Chalk 
Eock underlain by three feet of nodular chalk passing down into 
massive chalk. There are several small pits in the area west of 
Chard which expose soft white chalk possibly belonging to this zone. 
Membury. 
Another inland locality still further west where Middle Chalk 
occurs is Membury, a village about 4 miles N.N.W. of Axminster. 
Here in the lane west of the church and in the bank of a little garden 
hai*d nodular chalk like Melbourn Eock was seen, and just beyond 
is a quarry in the Middle Chalk containing Rhynchonella Guvieri, 
Terebratula semiglobosa, and many fragments of lnoceramus. 
In the next lane to the northward hard nodular chalk crops 
out at about 440 feet, chalk with lnoceramus mytiloides was seen 
at 470 feet, soft white chalk at 535, and hard lumpy chalk at about 
555 feet; a piece of the last was sliced and examined by Mr. W. 
Hill, who reported that it resembled chalk occurring elsewhere 
just below the Chalk Eock. Clay with flints, however, comes on 
just above this point, and that Eock if present is concealed. The 
difference of level, however, seems to indicate a thickness of more 
than 100 feet for the Middle Chalk here, an increase of thickness, 
which is borne out by the coast sections. 
By the next lane running north-west toward Furley there is an 
old quarry, at the top of which a few feet of rubbly chalk is exposed, 
containing lnoceramus mytiloides and Rhynchonella Cuvieri. 
Widworthy and Wilmington. 
The outlier west of Widworthy and the smaller one north of 
Wilmington are shown on the map (Fig. 30, p. 128), and the section 
in the sand-pit near Wilmington, showing the basement beds of 
the Middle Chalk, has been given on p. 127. 
There are some old chalk quarries in the park east of Widworthy 
Court, and Mr. A. Marwood Elton, of the Court, informs me that 
freestone was quarried from them as well as from the Sutton quarries 
half a mile further south. 
