138 PKOCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 24, 



Section in Pit iVo. 4 (continued). 



Lithology. Observations. 



10. Narrow stone, 2 in Fossils as in 12. 



11. Clay with sometimes a band of 



white stone, 2 ft. 3 in. 



12. Sandy stone weathering white, 4 \ Modiola minima. 



or 6 in J Myacites muscidoides (var. j6). 



13. Blue clay Avith a spring of water 



at the top, which colours the 

 section red, 6 ft. 



14. Stone, 4 in Fossils as in 12. 



15. Clay like, 13, 10 ft. to base of the 



section. 



It is not difficult to correlate these beds with those of pit No. 3. 

 The bed No. 4 is obviously equivalent to the irregular stone layer 

 in No. 30 of pit No. 3, No. 2 to the oyster-bed No. 25, No. 8 to 

 No. 33, and No. 12 to 38 ; so that we get two lower beds here. Even 

 yetjhowever, we reach no bone-bed nor any signs of the Keuper marls. 

 The beds of stone in this quarry are very finely laminated and wea- 

 ther white, altogether recalling the White-Lias bands of the south 

 of England. As, however, several beds of clay (the " contorta'^ shales) 

 and stone there intervene above the bone-bed, it is probable that 

 the true horizon of the latter is not reached here, Avicula contorta 

 not having been met with even in the lowest clays. Mr. Norwood, 

 in his paper, states that here the Lias is seen gradually changing into 

 the Keuper ; but it certainly does not in this quarry, which contains 

 the lowest beds discovered. Can he have mistaken the red weathering 

 of the two lower clay-beds for the red Keuper marls ? 



No fossils have been found in this quarry beyond those mentioned 

 in the section ; and Foraminifera are entirely wanting. 



The only place in this neighbourhood where there is any likelihood 

 of seeing lower beds leading down into the Xeuper, must be some- 

 where between Market Weighton and Pocklington, some six or seven 

 miles from Clifi". 



About 3 furlongs further on we come to another pit, No. 5, which 

 is not now worked, and consequently the section is not well exposed. 

 In this the white limestone is seen at the base, and oyster-bands 

 occur about 10 feet above it ; it has probably therefore been ex- 

 cavated in the same beds as pit No. 4. 



The last pit in the series, or pit No. 6, is situated less than a 

 quarter of a mile from No. 5, just at the cross road leading to 

 Hotham. We have there the following section. 



Section in Pit No. 6. 

 Lithology. Observations. 



Surface-soil Good thickness. 



1. Soft calcareous sands, 8 in. 



2. Sandy clay, 7 in P' n'/ *'°''*^'''7 ^^"^''^ fragments of 



•' ■" [ Ostrea irregularis, 



3. Stone, 7 in. 



4. Clay like 2, Sin 2, 3, 4 irregular. 



