and on the Drift of the Eastern Counties, 



187 



The angle made with the horizon by the planes of stratification 

 of the fourth stage presents everywhere south of Hollesley a 

 remarkable uniformity, varying between 25° and 35° ; and this 

 Crag also possesses a direction of inclination in its planes most 

 unvariable, being from N.N.E. to S.S.W.; its surface, where 

 not covered by the fifth stage, is generally deeply eroded ; and 

 its thickness in some places, as at Newbourn, is not less than 

 20 feet. North of Hollesley, beach stages are exposed in several 

 sections in Butley and Sudbourn parishes, but, from the absence 

 of that uniformity of direction possessed by them in the more 

 southerly exposures, they do not present the same means of 

 identification. 



No one who has, as I have done, measured the angles made 

 by the laminae with the horizon, in the sections presented by 

 the beach Crags, could suppose these Crags to have been depo- 

 sited under water ; the constancy of direction and the parallelism 

 of their planes precludes any idea of false bedding, so called — a 

 feature common enough in the horizontal or fifth-stage Crag 

 and in some parts of the overlying sands. In some places, as 

 at Trimley, these beach Crags contain no shells for a space, and 

 then the shelly laminae recur; but both have their laminae in- 

 clined alike in all respects. 



The subjoined actual copies of some of the more characteristic 

 sections of beach Crags, at places selected for their great distance 

 from each other, will afford an idea of their characters. 



Bluff in Bawdsey Cliff. 

 Fourth stage. Crag overlain by lower Drift. 



N.B. The inclination of the laminae is here represented greater than it should be: 

 the inclination is auout 'X>°. 



13* 



