THE LOWER OOLITES NEAR BRISTOL 
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Lima pectiniformis. 
Isocardia gibbosa. 
WlTCHELLI^ ft. in. 
Whitish, ironshot limestone « . . .08 
Witchellia Iceviuscula. 
W. ah’. Sutneri. 
Sphmroceras Brocchi, Sow, 
Plenrotomaria actinomphala. 
Amberleya ornata. 
Alaria dundriensis. 
Natica dundriensis. 
Opis similis. 
Myaconcha crassa. 
Cypricardia bathonica. 
Pecten barbatus. 
Unicardium gibbosum. 
It should be noted that the deposits of Sanzei ana 
Witchelliae hemerse here represented are missing both on 
the eastern and western portions of the hill, The exact 
geographical limits of these deposits have not been deter- 
mined, but at Maes Knoll strata of Garantianse heniera rest 
unconformably on those of Dumortierise hemera, while 
west of the church, strata of Garantianse time are lying on 
beds of the Sonniniae hemera. Messrs. Buckman and Wil- 
son attribute this arrangement to denudation which set in 
towards the end of Bajocian time. This denudation, they 
believe, removed all the strata then deposited down to that 
of the Sonniniae heniera, excepting at the middle of the hill, 
where beds of Witchelliae and Sauzei age were preserved. 
It then ceased at the central and western parts of the hill, 
but continued into, or was renewed, in Bathonian time at 
the eastern end until all the deposits down to those of the 
Dumortieriae hemera had disappeared. They find evi- 
