CRETACEOUS SERIES IN LINCOLNSHIRE AND TORKSHIRE. 327 



I have not seen this section. Mr. Jukes-Browne agrees with me 

 as to the position of the Grey Bed. 



In Mr. Clapham's pit, on the north side of Louth, and just west 

 of the Union, it is seen again. The section is a long one and the 

 description (page 57) is here abridged : — 



ft. in. 



Soil and Hessle clay 6 



Chalk-rubble 1 



Yellowish-pink chalk 8 



Greyish-white chalk, thin -bedded 11 



Hard nodular massive chalk 4 



'Nodular gre2/ish-wkite* chalk 3 



Seam of grey marly clay — 



Pink and grey chalk passing down into reddish, 



lumps of grey and seams of red marl in the middle 7 

 Hard ^reyisX-w^iife* nodular chalk 2 9 



{Compact grey chalk, gritty or sandy, very hard and 

 dark grey when wet (resembles the Inoceramus-hed) 1 7 

 Hard grey nodular chalk, becoming platy below ... 2 6 

 M-avd greyish-white * chalk in thick beds with partings 

 of shale 20 1 



The " Grey Bed " is included in the " hard grey chalk in massive 

 blocks (fossils) " 8 feet thick, given in the section which occurs in the 

 valley north of Hubbards Hill and opposite to Louth Waterworks. 



At Hallington it is seen again and seemed to me to approach the 

 colour-band more closely th^n in any other section. It is described 

 as " hard grey nodular chalk {Ammonites rotomagensis and Pecten 

 orbicularis), 2 feet," and " Hard Grey Chalk, open-jointed and breaking 

 into blocks, 1| feet." At Withcall Station it is weU shown, and is 

 included in the basement-bed of the section given. It can be fol- 

 lowed for some distance along the railway, being constantly thrown 

 up by a succession of small faults. 



In a pit on the hill about 5 furlongs east-north-east of Donnington 

 Station it is again exposed, its position in relation to the lower pink 

 band being the same as at Louth. The most northerly point at 

 which I saw this bed was at Grasby, north of Caistor. In a pit 

 in the village, close to the main road, the section is as follows : — 



ft. 



Soil and rubble 1 



Whitish, soft and rather marly chalk, with buff- 

 coloured marly bands, faulted dovm to the north-east 12 

 fHard, grey, gritty chalk, with grey-coated nodules 

 (fossils) ^ 3^ 

 ^ Hard, greyish-white chalk in massive beds 8 



The section is now somewhat obscured by talus. The Grey Bed 

 weathers into large flaggy pieces. 



Without the knowledge of the lateral change which takes place 

 in the lower beds of the Chalk between Cambridge and West Norfolk, 

 it is not surprising that so comparatively insignificant a bed should 



* The alteration here is mine. 



t I saw 20 feet of.greyish-white Chalk below the Grey Bed in November, 1887. 



