188 



Mr. S. V. Wood on the Red Crmj 



Pit at Crag Hall, Tattingstone. 

 Three Beach stages. 



Bea«h Crag overlain by lower Drift, in Pit near Melton Church. 



-^-^^ 



In one place only (with the exception of a bed peculiar to 

 Walton Naze, and presently referred to) could I find any indi- 

 cation of a water-deposit. This section is at Butley, near the 

 Abbey : a bed is there exposed, underlying a true beach stage, 

 more sandy, and stratified in a peculiar elliptical manner, resem- 

 bling the grain of wood where knots have been cut through ; 

 and it appears to me to afford indications of having been pro- 

 duced in a very shallow eddy. Nothing also is clearer than that 

 this inclined stratification, which at first sight resembles hori- 

 zontal strata tilted by upheaval, is due to no elevating action, 

 as, independently of the great area over which the fourth stage 

 extends being inconsistent (on such an hypothesis) with its 

 limited thickness, the inferior stages on which it rests often ex- 

 hibit a less inclination than does the overlying fourth stage. 



At Walton Naze, however, underlying the fifth stage and 

 two subjacent beach stages, a bed of Red Crag occurs, lying 

 on the London Clay, which difl^ers entirely from any other Red 

 Crag known. It is destitute of stratification, and is of a greyish- 

 brown colour. It alone, of all the Red-Crag beds, yields shells 

 in the condition in which they died — bivalves not unfrequently 



