INFERIOR OOLITE: NORTHAMPTON. 183 
The following sections on the northern side of Northampton, 
well show the local character of the beds : * 
1. Bass's Pit, on the Common, was as follows : 
FT. IN. 
Boulder Clay, with piped soil. 
Northampton 
Beds. 
Ferruginous sandy stone - 8 to 4 
Yellow sands - - - 3 
False-bedded oolitic and crinoidal stone, 
massive in places - - 6 
RJiynchonella - bed (B. cynocephala) 
a few inches to 
Ferruginous sandy beds, yielding poor 
ironstone - - - 8 to 10 
Upper Lias - Blue Clay. 
2. The Shittlewell or Nursery quarry : 
FT. IF. 
'Fissile sandy ironstone - 6 
Sandy bed - - - 2 or 3 
Thin and false-bedded oolitic stone ; 
forms a hard building-stone. The 
Northampton 
upper layers have irregular cal- 
Beds. ^ careous nodular bands, giving a 
J banded appearance to the rock 9 
Calcareous sandy stone, yielding better 
building-stone - about 6 
(^Rotten ironstone (with water) 4 or 5 
Upper Lias . Blue Clay. 
The lower beds were not exposed at the time of my visit, the informa- 
tion respecting them being given by the workmen. 
The irregular concretions are somewhat similar to those seen at Colly- 
weston and are probably of secondary origin. (See p. 198). 
At Boughton Green the Northampton Beds are worked as 
building-stone for local purposes. The beds exposed to the depth 
of about 20 feet, are much like those at Duston : fissile layers at 
the top (and when the stone has been weathered at the outcrop), 
then a sandy layer and massive false-bedded stone beneath. 
At Wooton Brickyard, south of Northampton, the following 
section showed the junction with the Upper Lias clay : 
FT. IN. 
Sandy soil. 
Northampton J" Rubbly ferruginous sandstone. 
Sand. \ Ironstone, with a few nodules. 
[" Brown and blue ferruginous lay. 
Upper Lias - < Sandy ferruginous band - 3 or 4 
I Blue clay. 
Here and at Duston (p. 181), as well as at a few other localities, 
there may be noticed the occurrence of ferruginous bands that 
tend to link the Upper Lias Clay with the Northampton Sand. 
At the Kingsthorpe Sand-pit (Stephen Cox's), known also as the 
" White Stone pit," the following beds were exposed, and at one 
time (according to Sharp) the Upper Estuarine clays were shown 
on top : 
* These sections hare been described by Sharp, Quart. Journ. Geol. Soc., 
vol. xxvi. pp. 362, 366. 
