60 H. E. Quitter — The Loicer Lias of Leicestershire. 



Zone of A. BucMandi. 



The beds of limestone and clay belonging to tbis zone are well 

 exposed in tbe district. Tbe cbief sections being at Crown Hill. 

 near Leicester, where nearly 50 feet of limestone and clay are ex- 

 posed, and at Kilby Bridge, where about 36 feet of the same were 

 shown. Exposures of a higher series of beds in this zone are given 

 in a brickyard by the canal side, near Great Glenn Eailway Station, 

 showing 14 feet of dark-blue pyritous shales, with limestone nodules, 

 full of fossils. At the time of writing, brickyards at Fleckney show 

 from three to four feet of these clays. 



During the excavations for the Great Northern Eailway from 

 Leicester to Tilton, about 12 feet of blue pyritous clays were cut 

 through at the entrance of Ingarsby Tunnel. 



Zone of A. semicostatus. 



This zone is not now so well exposed in the Vale of Belvoir as 

 during the Geol. Survey in 1874. When fully exposed, it was seen 

 to be a thick hard band of ferruginous limestone. It is fossiliferous, 

 but the present scarcity of exposures prevents any investigation. 



Prof. J. W. Judd, F.B.S., in his Memoir gives a list of fossils. 



Zone of A. oxynotus. 



The shales of this zone could formerly be examined remarkably 

 well at a tunnel between Grimston and Old Dalby, on the Notts and 

 Melton Branch Eailway. The section is now unfortunately covered 

 up, but the heaps of debris on the top of the tunnel show thinly 

 laminated blue shales, with ferruginous and limestone nodules, and 

 shelly bands of limestone. The shales when weathered are, in 

 places, richly fossiliferous, and judging from their present position 

 on the shale heaps, there would appear to be a regular disposition of 

 the fossils in bands or levels in the section, species of fossils being 

 confined to one place or heap in the debris. 



These shales with characteristic fossils are also exposed in a 

 brickyard between Houghton and Billesdon. The section there 

 shows about six feet of blue laminated shales, with pyritous bands, 

 and scattered ironstone nodules, which are more numerous towards 

 the top of the section. 



Zone of A. armahis. 



The beds of this zone are well exposed at Loseby brickyard and in 

 the railway cuttings at Loseby Station. 



The sections at both localities show about 26 feet of blue laminated 

 shales, with numerous ironstone nodules, and a sandy indurated 

 rock-bed about one foot thick near the base. 



A similar section showing about 20 feet of shales with limestone 

 and ironstone nodules, which appear to be in beds of this zone, is 

 exposed at Loseby brickyard. 



Zone of A. Jamesoni. 



So far as I am aware, there are no good exposures of the beds of 

 dark blue clays with septaria of this zone. They appear to be 

 exposed in the brickyard at Woolsthorpe. During drainage opera- 



