690 MESSRS. S. S. BTJCE3IAN AND E. WILSON [NOV. 1 896, 



Section YIII a. (continued). 



ft. ins. ft. ins. 

 Concavi. 6. Pale yellowish, compact limestone, with 



scattered iron grains, more regularly 

 bedded than No. 5, with occasional 

 earthy partings: Lioceras concavum, 

 Modiola Sowerbyana, Terebratula 



Jtkdesi 3 9 



Bradfordensis 7. Grrey to brown, sandy and crystalline 



and limestone with small, scattered iron 



MuRCHisoNiE. grains; very few fossils. A large 



smooth ammonite and Terebratula 



Eudesi (? shirbuimiensis) near th e top 4 3 



Note.— The underlying beds are concealed by the quarry talus. The dip of 

 the beds here is nearly due east at about 3°. 



The deposits marked Nos. 2-4 can be correlated in a general 

 way, without any difficulty, with the deposits shown in other sections. 

 No. 2 is the Lower White Ironshot bed on the horizon of fissilobata- 

 ovalis, the time of its deposition being that of the ' Sonninice ' 

 hemera. Our opinion of the time of the dep( sition of the other beds, 

 and consequently of their correlation, is shown in the margin. 



It is important to notice that there is no Ironshot here, nor is 

 the Witchellia-bed present — these beds have, presumably, been 

 removed by denudation. Therefore bed No. 1 caps No. 2 non- 

 sequentially. We consider that bed No. 1 is approximately contem- 

 poraneous with the Freestone in the large quarry by the church ; 

 but we are much puzzled as to the position of the 19 feet of stone 

 at Barns Batch, or of presumably a much greater thickness of deposit 

 above Bed 1 of this section. To the top of the hill on a fairly 

 steep slope above the Spinney there are some 45 feet of rock. Part 

 of the apparent thickness of the rock on this slope might be due to 

 repetition of the beds by step-faults ; but we know that at least 

 20 feet of rock must be present on the evidence of Barns Batch. If 

 the thickness be no more than this, it is possible that all the beds 

 above No. 2 were deposited contemporaneously with the Freestone ; 

 but if the thickness be greater, two interpretations present them- 

 selves: — (1) There was a considerable thickness of limestone de- 

 posited subsequent to the Coralline beds 1 ; or (2) all this limestone 

 was deposited before the Coralline beds, and therefore a much 

 greater thickness of a coarser- textured stone was laid down at 

 the south-western portion of the hill, while 20 feet of Freestone 

 were being deposited near the church, and 4 feet of limestone in 

 the northern roadside quarry. 



The solution of the question may become a matter of economic 

 importance (see p. 710), and it is certainly of scientific interest — 

 especially if the first supposition prove correct. 



Another direction from Dundry Church may be taken, namely, 

 S.E., to a section on the main road, at the edge of the southern 

 escarpment. The following details have been obtained : — 



1 In that case it is quite possible that the Barns Batch beds may be a cal- 

 careous deposit contemporaneous with the argillaceous strata called ' Fullers' 

 Earth' in other places, as is the case with the 'Calcaire de Caen' in Normandy. 



