1873.] SHARP OOLITES OF NORTHAMPTONSHIRE. 275 



bottom of the section, some feet of the Lower Estuarine Sands were 

 exposed. 



Half a mile south of this spot, is a very large quarry, called the 

 " Sheep-pens " quarry. The section here exposes a thickness of 

 about 23 feet of the Lincolnshire Limestone, consisting of some 

 seven beds, which display the usual variable characters ; overlying 

 a band of two feet of flaggy limestone, disposed in courses of about 

 2 inches thickness, and containing numerous plants and Ferns. 

 Under this, is a band of about 6 inches of Slate, reposing upon a 

 " reddish sand," Lower Estuarine. 



Section at the Sheep-pens Quarry, near Wansford Tunnel. 



ft. in. 



1 . Rubble and broken limestone 3 6 



2. Very hard brown limestone, somewhat crystalline, a capital 



building-stone, and makes good lime 4 



3. Soft friable limestone 2 6 



4. Compact marly limestone, having a glistening fracture 1 6 



5. Sand 6 



6. Brownish soft bed 1 6 



7. Flaggy blue-hearted limestone 1 



8. " The hard" — a fossiliferous limestone, having a glistening frac- 



ture, and sometimes blue-hearted 6 



9. Hard flaggy limestone, somewhat arenaceous, containing plants 



and ferns and a few shells, and sometimes blue-hearted, in layers 



of two inches 2 



10. Slate, in small " pothds " 6 



11. Ruddy sand — Lower Estuarine. 



At a little more than a quarter of a mile beyond this quarry, is 

 the Wansford Railway Tunnel, which passes for one third of a mile, 

 west and east, through beds of the Lincolnshire Limestone. At its 

 western entrance, are the ancient " Red Stone" or " South Pit" 

 quarries, not now worked. Here the stone is a very red, coarse, 

 shelly oolite : it was formerly much in request for the walls of locks, 

 mill-courses, and other hydraulic work. The fossils obtained from 

 this stone correspond very nearly with those yielded by the Ketton 

 and Casterton freestones, with the addition of Patella ruc/osa, some 

 peculiar Corals, and a fine example of Palceozamia pectinata. 



Fossils from the Old "Red Stone" Quarry, Wansford Tunnel. 



Ostrea flabelloides, Lam. 



gregaria, Sow. Natica Leckhamptonensis, Lycett. 



Nerinsea triplicata, Bronn. 



Area Prattii, Mor. Sj- Lye. Voltzii, Deslong. 



Astarte elegans, Sow. Patella rugosa, Sow. 

 Cuculhea oblonga, Sow. 



Lucina Bellona, aV Orb. Latimseandra Davidsoni, Ealw. $ 



Wrightii, Oppel. Haime. 



Homomya crassiuscula, Mor. Sf Lye. Flemingi, Edw. §■ Haime. 



(young). Thecosmilia gregaria, M'Coy (a var.). 



Myoconcha crassa, Sow. 



Pholadomya, large sp. ? Palceozamia pectinata, Brong. 



Trigonia spinulosa (?), Young &f Bird. Wood. 

 Terebratula perovalis, Sow. 



T 2 



