THE MIDDLE LIAS OF NORTHAMPTONSHIRE. 
311 
7.— Marlstone Rock-Bed, a ferruginous limestone, 
very red exterior, usual fossils. 
Tlie bed No. 5 is so nearly like the rock-bed that it is 
pretty evident it is formed of material arising from the 
denudation o± some portion of the rock-bed near at hand, 
possibly no further away than Aston-le-Wall, because at 
this latter place there is distinct evidence of erosion, (See 
section below.) 
2 .- 
3.- 
4.— 
Feet In. 
1 7 
5.- 
6 .- 
Rectory Pit, Aston-le-Wall. 
Soil ... ... ... ... ... 1ft. to 1 6 
Upper Lias. 
Greyish clay, with remains of Cephalopoda-bed . 
Fish-Bed, a whitish limestone, violet interior, 
containing a few Ammonites and Belemnites 
Middle Lias. 
Transition-Bed, a rather hard limestone passing 
into No. 3, but easily recognised as the 
Transition-bed, containing Ammonites acutus, 
Chemnitzia foceolata, Actceoninci Ilminsterensis, 
Trochus, Plicatula spinosa, Encrinite stems, Sc. 
Clay or marl. In places this is absent, and its 
place entirely taken up by hard stone of the 
Transition-bed ... 
Marlstone Rock-Bed, top part crowded with 
broken and worn Uhynchonellce , Belemnites, 
Ossicles, Sc. ... ... ... ... about 
>06 
0 1 
6 0 
The accumulation and packing together of broken shells 
at the top of the rock-bed here shows that it was, for a time 
at least, exposed to the action of moving water, either from 
actual exposure to the atmosphere, or from being sufficiently 
near the surface of the water to be affected by shallow 
currents or wave action. 
About a hundred yards from the Rectory Pit just 
described, and nearly opposite the houses at Appletree, is a 
small section almost identical with the last, the grey clay 
No. 2 being a little thinner. 
In the valley south of Byfield and near to Warden Grange 
is a small marlstone quarry which has not been worked for a 
long time. The section is as below. 
Section near to Warden Grange. F ee t in. 
1. —Soil, with blocks of limestone ... ... ... 1 3 
2. —Light grey'marly clay ... ... ... ... 2 9 
3. —Hard white limestone, purple interior, Ammonites 
rather abundant, Eucoid impressions, &c. ... 0 4 
