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The Atap is divided into square niilcs by horizontal and perpendicular lines. 



GEOLOGY, — The Uev. E. A.Woodrufre-l'encock writes : — Tlict^round is not 

 very iiiteresling for ideologists, ;is for the most ]-)art it is covere<l witli I'ost-Glacial and 

 ]\ecent deposits. Brigg, cast of lire Ancholme, stands on Oxford Clay (G/yphtca 

 dilatata 'j Mo.iiola biparlila ', Nuriila orii.ita ; and Ammonifcr. i>!j'h\\-), hut it is 

 entirely covered hy Cilacial Gravel (well-worn flints, associated \vith sand). On 

 the west of the River Anchohne peat and alKivium, in layers of vaiying thickness, 

 stretch north and south lor miles. Immediately after crossini^ the second Inidt^e 

 from Brigg, over the New River, .Roulder Clay {full of chalk fragments) appears for 

 half-a-furlong. This in turn is succeeded by two or three furloiiL;s of I'oiiton ]5eds 

 (or more properly Hibaldstow Heds, as the characteristic fossiliferous Ponton Oolite 

 caniiot here be idtnlirted, though this bed is rich in fossils ; Tmi'o opf>ellcnsis^ 

 sinistral sp. ; Pholadomya ftdicnla^ very rare; P. heraiiitii, common; 7)i\:^oi!ia 

 Jieiiiisphuvica^ dwarf variety ; JJiiia pwtiuifoniiis Scliloth. ; Ostrea gj-cxaiui^ com- 

 mon ; Cidaris and Eihiiius. rare ; Corals, obbcure) ; and the Thirton Beds of the 

 Inferior Oolite ( 7errciindifia_f{/(d>afa : 7\ iiiaxillala ; Liiciua bdhiia ; J'cc/c 



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P. anniilatiis ; P. aratus \ Tdnia dupliiata ; Corbis lajoyci y7\.x. a'n(^'e)ida ; with 

 small fragments of "tcood, and traces of jilants, which cannot be identified, and 

 Sc7'pidd). BrouglUon Lane i*lantation — the best ground for conchologists hunting 

 for living specimens— stands on this strata, with the exception of Bracken Uill, 

 where the Broughton and Scawby Road cuts tlie Brigg and Manby Road, which is 

 upon Hibaldstow Beds. After crossing the Romnn Road (Ermine Street) blown 

 sand covers the whole district with the exception of a little glacial gravel ju5t above 

 tlie escarpment. This is followed on the hill-side by the Lower Estuarine Beds 

 {Gakropygiis agariciforniis ; Cordis rotunda; Modiola so7verliya)ia ; Pltoladoinya 



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