INFERIOR OOLITE : KIRTON LINDSEY. 223 
however have yielded a number of Corals including Isastrcea 
Conybearci, L Richardsoni, Latimceandra Flemingi, Thamnastrcea 
defranciana, and Thecosmilia gr eg aria. 
The Rev. J. E. Cross has commented on the difference ex- 
hibited between the fossils from beds at the bottom of the Inferior 
Oolite at Santon and those obtained from the overlying beds. He 
calls the lower portion the Santon Oolites, and describes them as 
" a soft dark-coloured ferruginous bed, and an oolitic limestone 
bed above it." These beds are regarded by Mr. XJssher as above 
the " Hydraulic Limestone " in the section at Low Santon Lane ; 
they belong to a type which can be best studied between Winterton 
and Roxby, and at Raventhorpe, west of Broughton, on the 
Oolitic escarpment. They may be grouped for the most part with 
the Kirton Beds.* 
Mr. Ussher. states that between Cleatham and Mount Pleasant 
a by-road, leading up the escarpment, affords a section of the 
Basement Beds of the Oolites, from the Dogger upwards. The 
beds are more continuously exposed than in any other part of the 
escarpment south of the Barnetby ?nd Doncaster Line; in 
descending order they are as follows : 
FT. IN. 
Cream-coloured, broken, shaly mud- 
stones, similar to those below the 
" Hydraulic Limestone " 
'Lincolnshire 
Limestone. 
Lower Estuarine 
Series. 
Tough, pale grey limestone, in part si- 
liceous and with oolitic grains, con- 
taining veiy small fossils ; repre- 
senting the " Hydraulic Limestone " 
2 Oto 3 6 
_Impure arenaceous shaly stone - - 5 
Whitish sand-rock, exposed in the upper 
part of the road-cutting, apparently 
just above the " Dogger," and pass- 
ing under, or dovetailing into, bluish- 
grey shales, for the most part con- 
cealed by grass; attaining a thickness 
of about - - - - 12 
("Dogger, represented by tough, reddish- 
Northampton J brown, fine-grained, ferruginous 
Sand. | sandstone, very partially exposed, ap- 
L parently about - - 5 
By the Railway between Kirton and Scawby Stations, west of 
Gainsthorpe, the Kirton Beds are finely exposed, both in the 
cuttings and in a large quarry, which furnishes material for the 
manufacture of a valuable hydraulic lime, sold as " Blue Lias 
lime." f The section which I noted at Kirton Lindsey is as 
follows : 
* Quart. Journ. Geol. Soc., vol. xxxi. p. 121 ; Usber, Geol. N. Lincolnshire, 
p. 60. 
f See TJssher, Geology of Nori-h Lincolnshire, pp. 61, 69. 
