230 THE CRETACEOUS HOCKS OE BRITAIN. 
Nanny Goat’s House, and extending for about a mile eastward, 
though, the lower beds are frequently concealed by talus and fallen 
masses. 
This section has been described by several writers, notably by 
Mr. Wiltshire,* * * § Dr. Barrois,f Mr. J. F. Blake,J and Mr. W. Hill,§ 
bat Mr. Hill’s is the only complete account of the Lower Chalk of 
Speeton, because no one had previously fixed its upper limit. As 
vto the succession of the lower beds, Mr. Wiltshire, Dr. Barrois, and 
Mr. Hill are in close agreement, but here again the last was the 
lirst to recognise the representative of the Totternhoe Stone or 
“ grey bed,” which fixes the summit of the Am. varians zone. 
The following account of the beds below this horizon is compiled 
from that given by Mr. Hill, but the numeration of the beds is 
mine, Bed 1 corresponding with his 2, and Bed 2 with the lower 
part of his 3, which I have subdivided. Dr. Barrois’ thicknesses 
are also given to show how closely they correspond with Mr. Hill’s : — 
The 
«3 
8 
e 
• 
!> 
e 
o> 
a 
o 
S3 
Grey Bed (see postea p. 233). 
{4. Bedded grey chalk, the upper part in beds 
about 2 feet thick with marly partings, 
the lower beds more nodular and rougher 
from the abundance of comminuted shell- 
fragments ------- 
Nodular marly chalk, with lenticular 
layers of smoother chalk ; the upper 2J 
feet coloured pink, the lower 7\ feet grey 
Nodular marly chalk, the upper 10 feet 
having grey lumps in a matrix of pinkish 
marl, the lower 8 feet being wholly of a 
brick-red colour - - - - - 
Bluish-grey nodular chalk, with marly 
bands containing Bel. minimus near the 
base.- 
3. 
2 . 
1. 
Red Chalk (Selbornian). 
Hill. Barrois. 
ft. ft, 
'■ -..J 
39 +32 
10 13 
18 15 
10 10 
77 +70 
Mr. Hill observes that ordinarily only 5 feet of Bed 1 are visible 
at the base of the cliff, but that occasionally the whole of it is exposed, 
and it can then be seen to pass down into smooth red chalk. 
The above succession is different from that seen anywhere else 
in Britain ; the well-marked courses of hard white or pinkish chalk 
(Sponge Bed) and of hard shelly stone (Inoceramus Bed), which 
are constant all through the Wolds of Lincolnshire and Yorkshire, 
cannot be distinguished at Speeton. Mr. Hill, however, remarks 
that the beds above numbered 1, 2, and 3 are comparable in general 
characters with the Chalk Marl of Cambridge, Suffolk, and South 
* Geologist, Vol. ii. p. 261, 1859. Also reprinted for the Geologists’ 
Association. 
t Recherches sur le Terr. Cret. Sup., 1876, p. 194. 
I Proc. Geol. Assoc., Vol. v. p. 232 (1878). 
§ Quart. Journ. Geol. Soc., Vol. xhv. p. 343 (1888). 
