KED CRAG. 
91 
Open and most of them have been ploughed over. The sections were 
of the usual character, and are fully described by Mr, Whitaker.* 
Felixstow Cliffs show very fossiliferous Red Crag, extending 
for about two miles, and having a thickness in one part of about 
30 feet. This well-known section is now much obscured by talus 
and by buildings, but in Bulks Cliff Mr. Whitaker noted five or 
six recognisable beds in the Red Crag, as below. Other portions 
show shelly Crag without any divisions. 
Feet. 
1. A bed consisting chiefly of shells of Mya, but with some 'i 
of Oyprma - - - - - -Iflor 
2. An apparently lenticular 'mass of fine light-yellow sand, f more. 
with clayey layers at top and bottom - - - J 
3. False-bedded Orag, the false-bedding almost wholly west¬ 
ward - - - - - - -6 or 7 
4. False-bedded Crag, with loamy layers, the false-bedding 
westward - - - - - - -6 or 6 
5. An even bed, of Mya, &c., rather white, with phosphatic 
nodules - - » - - about 2 
6. False-bedded Orag, the false-bedding eastward, less shelly 
than the rest and with ferruginous layers. 
London Olay. 
In these cliffs the common shells are Trophon antiquus, var, 
contraria, Purpura lapillus, Pectunculus, Tellina ohliqua, T, 
crassa, and Mactra ovalis, but most of the sections are now 
railed in—-principally, I believe, to prevent collectors from 
pulling the cliff to pieces. 
Seams of laminated clay occur in the Crag at several spots, and 
Prof. Prestwicht apparently refers the brickearth of the following 
section (bed 2), regarded by Wood as belonging to his Lower 
Glacial, to the Chillesford Clay. 
Fig. 14. 
Section in a Neiv Road-Cutting just N, of the Convalescent Home^ 
Felixstow, 
(S. V. Wood, junr., 1882.) 
1. Soil. 
2. Reddish-brown brickearth, like that of the brickyard at Derby Road, Ipswich, 
passing down into— 
3. Yellow sand with orange-coloured bauds and patches, and some very fine 
shingle. 
4. Dark brown bedded loamy sand. 
5. Obliquely bedded Red Crag, without shells (decalcified). 
6. Obliquely bedded shelly Red Crag. 
There is no line between 5 and 6 really, the line here merely represents the ending 
off of the shells. 
The coprolite pits at Felixstow are now (1889) all closed. 
* Geology of Ipswich, pp. 52-54. 
f Quart, Journ. Geol. Soc., vol. xxvii. p. 338. (1871.) 
