The Quarterly journal of the Geological Society of London . rave, and Sudbourne.^ ^ The sharp fracture, when they are broken, of the shells in the gangway(fig. 9) is in striking contrast with the soft and marly condition of some ofthe specimens in the pit-section (fig. 10). ^ Mr. Kendall informs me that some years ago, by digging through the floorof the pit of indurated Crag at Aldeburgh (No. 32), he found a number ofspecimens of Cardium decorticatum in a similarly rotten and partly decalcifiedcondition. ^ At pit No. 34 there is a seam containing specimens of Mytilus in greatprofusion, a form
The Quarterly journal of the Geological Society of London . rave, and Sudbourne.^ ^ The sharp fracture, when they are broken, of the shells in the gangway(fig. 9) is in striking contrast with the soft and marly condition of some ofthe specimens in the pit-section (fig. 10). ^ Mr. Kendall informs me that some years ago, by digging through the floorof the pit of indurated Crag at Aldeburgh (No. 32), he found a number ofspecimens of Cardium decorticatum in a similarly rotten and partly decalcifiedcondition. ^ At pit No. 34 there is a seam containing specimens of Mytilus in greatprofusion, a form which is by no means so abundant at other localities. * I bored here for 20 feet, through comminuted ferruginous Crag, withoutreaching the shelly sands. ^ It has been shown that large species of moUusca occur abundantly inplaces in the upper or ferruginous part of the Crag. It can hardly besupposed that small forms were absent from the sea of that period, but inmaterial so loose and friable it is less probable that traces of them would bepreserved. 1^ O I. aI— S3 2 03 S 03 O 2 3 OQ t-l a e3 w I s si o toO o bD• 1-1
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
