198 LOWER OOLITIC ROCKS OF ENGLAND : 
Hinnites tumidus, Pecten aratus, P. lens, &c. These beds include 
the Kingstone, White and lied Gale.* 
The curious nodules of sandstone that' occur in this district and 
elsewhere (see p. 153), have been noticed by Capt. Ibbetson and 
Prof. Morris : they speak of " a concretionary bed of sand with 
irregular cylindrical ramose bodies of sandstone, resembling 
fucoid stems, assuming sometimes a very singular arrangement, 
as at Wittering [Whittering]."t It seems to me that these 
nodules, like the " pot-lids," indicate a stage in the formation 
of sandstone a process that may in some cases be going on now. 
The undulating layers at Coilyweston have most probably been 
disturbed since the formation of the nodules, perhaps by dissolu- 
tion of calcareous matter from the subjacent stratum (which 
presents here and there a hummocky surface), and by mechanical 
movements in the sandy mass. (See Fig. 55.) 
Prof. Judd states that at Duddington there are a number of 
old pits near the river which still bear the name of " the Slate- 
pits " ; according to tradition, slates similar to those of Coily- 
weston were once dug there, and their abandonment was due to 
their being "drowned" by the waters of the Welland.J At 
JEaston also, I was informed that at times the water rises in the pit 
so that the men are t( drowned out." 
The section on the north side of the road at Easton, near 
Stamford, was as follows: 
FT. IN. 
f Kubbly fine-grained oolite - 6 
Even layers of oolitic freestone, with 
closely packed oolite grains - 7 
Hard grey and pinkish shelly lime- 
stone, with scattered oolite grains 
1 8 to 2 
Yellow sands, with irregular nodules 
of calcareous sandstone - 4 
Lincolnshire 
Limestone and 
Coilyweston Slate. 
Tough brown sandy limestone, packed 
with oolite grains in the upper and 
lower portions, and with scattered 
grains in the middle - - .16 
Sand with nodules (as above) - 1 
Irregular calcareous sandstone, with 
scattered oolite grains, and plant- 
remains. (Water rises to this bed) - 2 
"Slate-beds." Banded calcareous and 
micaceous sandstone, showing Pot- 
lid structure - - 2 to 2 6 
Northampton /Sands, about 6 feet I - '-- - - "I , x 
Beds" {ironstone beds - .} (not seen). 
The Slates here yield Malaptera (Pterocera) Bentleyi (known 
to the quarrymen as " Bird's Claws "), Gervillia, Lucina Wrighti, 
Pecten, &c. The Limestone is used for walling, and is burnt for 
lime. The sand is employed in making mortar, and for foundry- 
purposes. 
* Sharp, Quart. Journ. Geol. Soc., vol. xxix. pp. 243-245. 
t Rep. Brit. Assoc. for 1847, sections, p. 129. 
j Geology of Rutland, p. 154. 
See also Judd, Geol. Rutland, p. 156. 
