1873.] 



SHAEP OOLITES OF NORTHAMPTONSHIRE. 



239 



Fossils from Lincolnshire Limestone, Morcot. 



Gervillia radians, Mor. 8f Lye* 

 Hinnites abjectus, Phil. 

 Inoceramus obliquus, Mor. § Lye. 

 Lima cardiiformis, Sow. 

 Ostrea (young). 

 Pecten lens, Sow. 

 Pinna cancellata, Bean. 

 cuneata, Phil. 



Ceromya Bajociana, d' Orb. 

 concentrica, Sow. 



> S P-? 



Lucina Bellona, d' Orb. 



Wrightii, Oppel. 



Modiola Sowerbyana, d'Orb. 



sublssvis (?), Sow. 



Pholadomya Dewalquea, Lycett (syn. 

 of media of Bewalque and Chapuis). 



ovulum, Ag. 



,sp.? 



Tellina, sp. ? 



Trigonia compta, Lycett. 



Unicardium depressum, Phil., sp. 



Terebratula globata, Sow. 



Natica adducta, Phil. 



Leckbamptonensis, Lycett. 



, sp. ? 



Pterocera Bentleyi, Mor. $■ Lyc.i 



Serpula, sp. ? 



Acrosalenia Lyeettii, Wright. 

 Cidaris Fowleri, Wright. 

 Pygaster semisidcatus, Phil. 

 Stomechinus germinans, Phil. 



Ferns : — Pecopteris polypodioides, 

 Lindley, &c. 



To the south-east of Morcot, and to a high level, stretches the 

 comparatively barren tract of Barrowden Field ; in crossing which 

 by the road to Tixover and Duddington, are passed over in suc- 

 cession (above the Lincolnshire Limestone) — the Upper Estuarine 

 Series, the Great Oolite Limestone, the Great Oolite Clay, and, at 

 the highest ground, a thin capping of Coenbeash. 



Luepenham. 



Two miles north-east of Morcot, upon the Uppingham and 

 Stamford road, near to the Luffenham Railway Station, is a quarry 

 the limestone beds of which answer to those of the lower Morcot 

 quarry, and yield some similar fossils. 



Ketton. 



Three miles further in the same direction, and beyond the village 

 of Ketton, are the quarries whence is obtained the far-famed 

 Ketton Feeestone. This is the most excellent in quality of any 

 freestone now obtainable throughout the entire area of the Lincoln- 

 shire Limestone. 



When I refer to the church of St. Dunstan in Pleet-street, 

 which is built of this stone, and point to the unimpaired condition 

 of its exterior surfaces, after many years' exposure to the disinte- 

 grating action of the London atmosphere, I need say nothing of the 

 durability of the Ketton freestone, even when exposed to unfavour- 

 able conditions. 



It is a matter of observation that the " Ketton " freestone is of 

 better quality when obtained from beneath a thick bed of clay, than 



* Nearly allied to Gervillia Hartmanni, Goldf., a not unfrequent fossil in the 

 Duston ironstone beds. 



t Collected by Mr. Judd. See notice of this beautiful form in description of 

 Fossils of Collyweston Slate Beds — forward, page 247. 



