WESTLETOX FiEDS TO THOSE OF NORFOLK, ETC. 153 



B. Fine sand and shingle, horizontally stratified, and in places obliquely 

 laminated. It consists essentially of sand, with subordinate seams of 

 shingle, composed ot small flint- and white quartz-pebbles with some 

 subangular flhits. The upper half of this bed is ochreous, and coarser 

 than the lower half, which is of a light yellow colour with faint 

 ochreous seams. It is traversed by a few small faults of from 3 inches 

 to 3 feet throw 15 feet. 



Fig. 7. Section between Chappie and Mark's Tey on the branch line to 

 Sudbury. 



A. Dai'k grey Boulder-clay, divided into an upper chalky and light- 



coloured bed, and a lower one of a dark bluish-brown colour. 14 feet. 



B. Sand and gravel ; the upper part coarse and ferruginous, the lower 



part white with ochreous seams and regularly stratified 10 feet. 



E. London Clay with seams of Septaria. This cutting is from 20 to 25 feet 

 deep. At the time of my visit the central part was but just com- 

 menced, and is filled in from inference afforded by the trial-holes only. 



Fig. 8. Section on the Railway at Kyson, one mile South of Woodbridge. 



The Boulder-clay does not show in the Section, but crops out a little 

 higher up the slope of the hill, above B. 



a. Trail of loam and gravel. 



feet. 

 1? W f {^' White sand, full of small flint- and white quartz-pebbles, 



*, , ® ' \ subangular flints, chert, &c. (see p. 125) 2 



leton. y-y^ White and light yellow sand ] 



(\. Bright yellow sand, with occasional oblique lamination, 



{ without fossils 10 



2. Coarse sand, much oblique lamination, shells in local 



C Crao- \ patches 5 



='■ I 3. Red Crag ; very fossiliferous at the west end of the cutting, 

 I but fossils scarce at the east end. At the base is a thin 



I bed of Coprolites, on a denuded floor of London-clay 



i^ Septaria 12 



E. London Olay. 



Discussion. 



The Peesident said that a paper of this kind was the result of 

 eiiormous observation and very careful reasoning. There was one 

 point which had occurred to him : if the Westleton series were 

 marine, either the whole area had been depressed uniformly, or 

 there had been a greater depression to the westward. On the first 

 hypothesis, thicker marine strata would probably have been found 

 to the eastward and westward, and in the latter case it was remark- 

 able that no marine beds of this age were found on the Western 

 coast. He had no doubt that the Author had carefully considered 

 the possibility of the subaerial origin of these beds before rejecting it. 



^[r. ToPLEY called attention to the section at Hertford Heath, and 

 asked whether the composition of the beds was not peculiar. The 

 evidence as to the southern origin of the pebbles he considered 

 very important. If the older beds and the Wcsrleton Beds are com- 

 posed of Houthern Drift, they are sharply marked oft" from the 

 Glacial beds. A section exhibited from Hiudliead to Windsor was 

 of interest as bearing on the relation of these beds to the Chalk 

 escarpment and the Weald. The escarpments might possibly bo 



m2 



