407 
Capt. Macdakin — Northampton Ironstone Bech. 
that the beds are much riclier at this distance from Lincoln, bat 
that tbey become very siliceous and pass into a ferruginous sand 
above Normanton about eighteen miles to the south. 
Fig. 1. — Section of the Northampton Ironstone beds eight miles South of Lincoln. 
Inches. 
8 
4 
9 
4 
16 
10 
11 
13 
6 
36 
3 
10 ft. 
In tbe pbysical geography of the country, the Northampton Sands 
occupy the upper part of the escarpment (Fig. 2 B, D), known as 
the Cliff, running roughly parallel to the Great Northern Railway 
(Fig. 4) from Grantham to Lincoln. At ahout a quarter of a mile 
Fig. 2. — Section of Cliff showing in the shaded portion of C, the oxidised 
outcrop of the iron bed. 
A, Lincolnshire Limestone. B, Lower Estuarine bed. C, Northampton Ironstone bed, 
oxidised from the outcrop towards F, this bed being ten feet thick. D, the Coprolite 
bed four inches. E, Lias clay. 
Oolitic Limestone 
35 feet thick. 
I. Peroxide bed 
II. Clay ironstone 
III. Hard carbonate of iron 
IV. Clay parting 
V. Hard blue carbonate of iron 
VI. Peroxidised band 
VII. Nodules and clay partings 
VIII. Blue ferruginous sand bed 
IX. Ironstone nodules 
X. Clay with nodules (micaceous) 
XI Coprolites and pyrites 
XII. Blue Lias clay 
