Vol. 52.] ON THE UPPER PORTION OF DFXDRY HILL. 



681 



Section IV. (continued). 



ft. ins. 



Sauzei (cont.). Astarte multicostata, Ctenostreon 

 jtectiniforme, Ostrea explanala, 

 Myacites jurassi, Cucullaa ob- 

 longa ; and many gasteropoda, 

 e. g. Pleurotomaria elongate, PL 

 omata, PL granulata, PL sulcata, 

 PL paucistriata, Troches Zetes, 

 Ataphrus lesvigatus, & Cerithium 

 subscalariforme. (The top flat 

 and planed off.) 



Witchellle. 6. Whitish, argillaceous, ironsbot lime- 

 stone ; when wet, soft and much 

 broken up ; the upper 2 or 3 

 inches more compact and gene- 

 rally adherent to the base of the 

 Ironsbot. Many lamellibranchs 

 and ammonites ; the horizon for 

 numerous Witchellice, especially 

 involute, costate forms ; Myocon- 

 cha crassa, Opts similis, Astarte 

 excavata, A. elegans, Pleuroto- 

 maria oxytera, PI. armata 5 



7. Brown marl 2 



8. Brownish-grey ironshot limestone. 



Belemnites, bivalves, and uni- 

 valves 7 



SoxninIjE. 9. Grey ironshot limestone, with many 



Sonninics and Witchellice 8 



10. Brownish-yellow shelly limestone, 

 very much speckled with small 

 iron grains; at the top of this 

 t comes often a bed of brownish 

 sand about 3 inches thick, with 

 numerous more or less perished 

 Sonninice of the ovalis-tjpe, mark- 

 ing a conspicuous horizon in the 

 quarry 9 



DisciT.E. 11. Yellowish-brown limestone with 

 compact ochreous marl. Umbi- 

 licate Hyperlioceras, Terebratula 

 Eudesi, and T. cortonensis 1 



12. Yellowish-brown limestone with 



small ochreous specks. Terebra- 

 tula Eudesi 5 



13. Light-coloured limestone, pale grey 



below, yellow -ochreous and marly 



above 1 



14. Light-grey limestone with small 



ochreous specks. (Below present 

 floor of quarry — 1895.) 



ft. ins. 



1 



1 5 



2 5 



The correlation of this section with those previously given may 

 be commenced at the horizon of Sonninia fissilobata-ovalis (bed 10), 

 which is well marked. Below that horizon the rocks are seldom 

 exposed, but we are able to record the beds (Nos. 11-14) with 



