444 
The cretaceous rocks of Britain. 
The zone becomes still thicker to the westward, and the following 
section was measured near the beginning of Berry cliff about a mile 
and a quarter west of Branscombe Mouth : — 
feet. 
Soft white chalk, with frequent layers of flints and a layer of 
large flints at the base 
Very hard compact yellow limestone - 
Soft whitish chalk with flints, both scattered and 
"S in layers, many hard nodules and several nodular 
© layers. Spines of Cidaris Sorigneti are abundant, 
Rhynch. Cuvieri and Inoceramus mytiloides - 
Massive firm chalk with few nodules, but having 
lenticular lumps of very hard chalk, Cidaris 
hirudo, test and spines ------ 
Rough nodular chalk in alternating layers of very 
hard nodular rock and less hard shaly chalk, 
Cidaris hirudo , Cidaris Sorigneti and Discoidea 
Dixoni - - - - - - - - -12 
S 
• rO 
P 
3 
O 
tD 
rH 
s 
S3 
14 
10 
36 ^ 
The actual base was not visible at this spot, but near by the base¬ 
ment bed was seen to be a foot thick and to be a very hard yellowish 
limestone with scattered grains of quartz and some glauconite at 
the base, which rests on and seems to enclose some of the phosphatic 
nodules at the top of the Cenomanian. The total thickness here 
is nearly 38 feet, this being more than at Hooken or even at the 
Beer quarries. 
Lower down the slope and above “Red Rock” path are two fallen 
blocks, one of which shows the basement bed and the junction 
with the Cenomanian very clearly ; the other is a mass of the upper 
part of the zone and is crowded with spines of Cidaris , especially 
the knob-headed C. Sorigneti , with Cardiaster pygmceus, Discoidea 
])ixoni, and Rhynchonella Cuvieri. The mass includes the thin 
limestone top covered by soft chalk with large black flints. 
Another good exposure of this chalk occurs a little farther west 
above Donkey Linhay rocks, and the details are similar. 
Beyond Littlecombe Hollow the chalk rises to the very summit 
of the cliffs, the higher part of which is here very steep and difficult 
of access. * 
The most westerly chalk tract in England is that on the summit 
of Dunscombe Hill between Weston and Salcombe mouths. It is 
quite inaccessible except by means of ropes and tackle, but above 
the Cenomanian limestones there can be seen 10 or 11 feet of rough 
nodular chalk resembling that of Berry cliffs, so that there can be 
no doubt that the zone of Rhynchondla Cuvieri is present. 
The Terebratulina Zone. 
The first exposure of this zone is in Pinhay cliff above the section 
of the Rh. Cuvieri zone described on p. 433. In the bluff above the 
slope where the section was taken about 20 feet of soft white'chalk 
with many elongate and finger-shaped flints can be seen, but the 
