334 



PROCEEDINGS OF THE GEOLOGICAl SOCIETY. 



"Walton (fig. 12), where a bed of unproductive sands overlies the 

 shelly beds, and subtends them on to the London clay in a direction 

 from K. to S. 



In the railway-cutting between Woodbridge and Martlesham, this 

 upper division is more developed, and the lower division presents a 

 slightly eroded surface (fig. 13). 



s. Pig. 13. — Section in Railway -cutting south of Woodbridge. n. 

 ( ^ 



a. White sand and gravel, 3 feet. 



3'. Upper Red Crag, yellow sands with a few patches of shells at base, 15 teet. 



2. Lower Eed Crag, shelly, 12 feet. I. London Clay. 



The erosion of the lower division now becomes marked both_ to 

 the eastward and northward of this place. Some well-marked in- 

 stances may be seen in the cliif at Bawdsey (fig. 14), and again at 

 Shottisham (fig. 15). 



Fig. 14. — Section in Bawdsey Cliff. 



Part of lower divison, with shells more numerous, and ferruginous. 



