242 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



ft. in. 

 of brown and white sand, and containing shelly 



bands 7 



d. Ferruginous band 6 



2. Lincolnshire Limestone — 



a. Coarse and very oolitic red stone, sometimes 



perforated on the upper bedding surface by 

 Pholas borings — the "Flesh" or "Crash" of 

 the quarrymen — crumbles upon exposure to 

 frost, and is not quarried for "freestone" — 

 varying in thickness up to 2 6 



b. "Freestone" bed — the celebrated Ketton stone, 



very oolitic, and freely worked, hardens upon 

 exposure ... 3 



c. "Rag" stone — pisolitic bed, about 4 



d. Harder "Freestone" — more siliceous, presenting 



a glistening fracture, not worked, and thick- 

 ness not ascertained — 



[Feb. 



ft. in 



15 6 



9 G 



Fossils from the Upper Estuarine Series, Ketton. 

 Modiola imbricata, Sow. I Cyrena, sp. ? 



Neasra Ibbetsoni, Morris. 



&c. 



Fossils from the Lincolnshire Limestone Beds, Ketton. 



Lima bellula, Mor. 8? Lye. 



■ cardiiformis, Sow. 



proboscidea, Sow. 



Pontonis, Lycett. 



, large sp. (allied to L. grandis, 



Homer) ? 

 Pecten aratus, Waagen. 



, sp. ? 



'j sp. ? 



Pteroperna plana, Mor. $• Lye. 



Cardium Buckmani, Mor. &;Lyc. 

 Ceromya, sp. ? 

 Lucina Wrightii, Oppel. 

 Modiola imbricata, Sow. 

 Myacites decurtata, Phil. 



, sp.? 



Pholadomya fidicula, Sow. 

 Pholas, sp. ? 



Terebratula fimbria, Sow.* 



globata, Sow. 



— — sub-maxillata, Sow. 

 perovalis, Sow. 



Natica Leckhamptonensis, Lycett. 



Belemnites Bessinus (?), d'Orb. 



Acrosalenia Lycettii, Wright. 

 Echinobrissus clunicularis, Lhieyd. 

 Pseudodiadema depressum, Agassiz. 



Montlivaltia Delabechii, Edw. § 

 Haime. 



Strophodus magnus, Ag. (palates). 



Ketton, to Geeston and Colltweston. 



Proceeding southwards, through Ketton, we pass its very beau- 

 tiful church, portions of which are of the Norman, Semi-Norman, 

 Early English, and Early Decorated styles (dating respectively in 

 the 12th, 13th, and 14th centuries), all unimpaired, and all built of 

 the neighbouring " Barnack Rag," the famous church building-stone 

 of a wide district in those early times. 



"We then cross upon the Upper Lias the river Chater, and ascend 

 to the so-called Ketton station, which is in the hamlet of Geeston. 



* Terebrahda fimbria occurs also at Denton, Ponton, and Barnack, and Mr. 

 Judd has met with it in the same beds near Lincoln. 



