Vol. 54.] CORALLIAN EOCKS OP UPWAKE. 609 



by the roadside about 10 yards south-east of the section above 

 described, which will be alluded to hereafter as the field- 

 sectiou : — 



Section of a Well at Upwaee, near the Inn 

 (according to Messrs. Thomas & McFarlane.) 



Ft. In. 



F. Surface-soil, disturbed, with lumps of white rubbly limestone . 1 6 

 'E. Impure limestone full of ferruginous oolitic grains ; a layer of 

 corals ( Thecosmilia anjiularis) at the top, and a band of hard, 

 nodules 6 inches from the base ; Lithodomus inclusus occurred 

 in the corals 2 3 



D. Brown clay, containing soft white nodules, and in the lower 

 part GryphcBa dilatata, Ostrea gregaria, Exogyra nana, Uni- 



cardiiim depressum, Vermilia sulcata, Serjoula s^ 2 



Passing down into — 



0. Clay, blue and sometimes distinctly laminated above, blackish 

 £ ■{ below ; the lower part full of^ Exogyra nanadmd. Serpula ; other 

 fossils were iVoc^io/a, small (young oi M. hipartita ?), divaxno- 

 nites (apparently either A. vertebralis or A. cordatus) ; much 

 iron pyrites, but no pyritized fossils found 7 9 



B. Dark grey impure limestone, full of brown ferruginous oolitic 

 grains, hardest at the bottom, where the fossils were more 

 abundant ; the upper part contained Ammonites sp., Avicula 

 inceqidvalvis ?, and a large Serpula ; the lower part, Amtnonites 

 {Cardioceras) cordatus, A. (C) MaricB, Exogyra nana, Pecten 

 jibrosus, Modiola hipartita, Hhynchonella varians, Serpula sp. 4 



A. Soft blue clay with pyritized ammonites and many GryphcBa 

 dilatata ; at the top a well-marked thick band of Vermilia 

 sulcata ; other fossils were Ammonites (Peltoceras) Eugenii, 

 Cucidloea concinna, &ic 4 6 



22 



Mr. Thomas states that on the southern side of the well the depth 

 of soil was 3 feet or more instead of only 1 foot 6 inches, and that 

 the ground, at any rate on this side, had been disturbed, pieces of 

 Roman pottery being found at the bottom of the soil. Below this, 

 there was no sign of either disturbance or unconformity in the 

 section. 



The beds (E) of the well-section and (1) of the field-section must 

 be the same. It will be seen that in the short distance between the 

 two sections the Els worth Rock comes up nearly to the surface, a 

 rapid rise of which there is little or no indication in the field-section. 

 However, there is no reason to suspect a fault, for the rise is hardly, 

 if at all, more rapid, probabl}-, than that shown by the suddenly- 

 increasing angle of dip at the northern end of the Southeru Quarry. 



Mr. H. Keeping, of the Woodwardian Museum, subsequently 

 examined the material thrown out from the well, and collected a 

 large series of specimens from it. He at once recognized the 

 Elsworth Rock, with Oxford Clay below. 



I have examined the fossils obtained by Messrs. Thomas & 



