392 
THE CRETACEOUS ROCKS OF BRITAIN. 
Terebratulina Zone 
The best section in this zone near Winchester is a large quarry 
on the southern slope of St. Giles’ Hill east of. the town. The 
following is a translation of the description of it given by Pro¬ 
fessor Barrois in 1876, reversed so as to read from above down¬ 
wards : — 
feet. 
Very nodular chalk, with Rhynchonella Cuvieri, Terebraiula 
and Spondylus spinosus - 10 
Argillaceous marl --------- Oj 
Compact white chalk, with marl seams, nodular layers, and 
a few flints in irregular layers ; Terebratulina gracilis , 
var. lata , Ter. semiglobosa, Inoceramus Brongniarti , 
Spondylus spinosus , and Sp. latus - - - - - 26 
Layer of hard yellow nodules ------- 0^ 
Compact white chalk with marl seams, Ter. gracilis , var. lata 10 
Layer of flints. 
Compact white chalk.5 
Layer of flints. 
Firm compact white chalk, in beds separated by seams of 
shaly grey marl ; contains a few small scattered flints - 20 
About 72 
For the following remarks we are indebted to Mr. Griffith, who 
writes, “ the chalk in this pit is massive and close grained, the beds 
dipping to the north at 5 deg. About half way up the face of the 
pit several large Ammonites were visible in 1896 along one dehnite 
line. There are four well marked layers of flint-nodules, black 
inside with thin rinds ; and there are two rust-coloured nodular 
layers in the higher part. This chalk is used in building for interior 
work, and is also burnt for lime.” 
C. Sections in the Kingsclere and Hurstbourne Inliers. 
The Middle Chalk forms a cincture round the inker of Kings¬ 
clere and Burghclere, and portions of it are brought to the surface 
again in the valleys to the westward, especially in the tributary 
valleys of the Bourne Biver from Combe and Verulam Dean to 
Hurstbourne Farrant and St. Mary Bourne. (See Fig. 70). 
The following notes on this district are furnished by Mr, F> J. 
Bennett. 
The Melbourn Bock is traceable all round the Vale of Kingsclere; 
its base is exposed in a small pit less than three-quarters of a mile 
south-west of Sydmonton Church. The rock is more fully seen 
in the railway-cutting about a mile south of Burghclere, and its 
upper beds here contain fossils. The next cutting to the southward 
is in the soft white chalk of the higher zone, with occasional flints, 
Ter. gracilis, var. lata , and Terebratula semiglobosa occurring here. 
Parts of both zones are exposed in a chalk pit by the side of the 
road two-thirds of a mile north of Sydmonton; near the bottom 
is massive chalk with veinings of greenish marl probably not far 
above the Melbourn Bock; this‘is overlain by 20 feet or more of 
broken chalk. The beds are dipping steeply to the north. 
