F. A. Bedwell — Ammonites in Thanet Cliffs. 



measurements of the whole 

 cliffs of the Island, and these 

 ing tabulai' statement. Alto 



of the Chalk seen in section along the 

 details will be found in the accompany- 

 igether there is a depth of 180 feet of 

 chalk in the section ; the highest is 

 seen at Foreness (point in Sketch- 

 map), and the lowest is seen at the 

 bottom of the cliffs, just before the 

 turn to Pegwell (point C). 



Out of the whole 180 feet, the 

 Ammonite zone, according to the 

 position of the specimens found up 

 to the present time, covers a depth 

 of between 55 and 56 feet. I have 

 searched for specimens in the chalk 

 above and below these boundaries, 

 but at present without success. 

 Strange to say, the Ammonite zone, 

 so far as I have now identified it, 

 will be found to coincide with chalk, 

 in which there are no lines of flint ; 

 individual flints occur rarely through- 

 out the area of the zone, and bursts 

 or spurts of flint show themselves 

 here and there, and sometimes in 

 connexion with the Ammonites them- 

 selves ; but excepting just above the 

 lower boundary of the zone, there 

 are no lines of flints exhibited in it, 

 and at present it looks as if the ap- 

 pearance and disappearance of the 

 Ammonites was coincident with the 

 disappearance and re-appearance of 

 the flint lines. 



The various undulations of the 

 Chalk are shown in the accompany- 

 ing sections, which, howevei", are 

 necessarily much curtailed in point 

 of detail. 



The three uppermost bands of 

 flint indicated in the accompanying 

 table appear in various places be- 

 tween Birchington and Kingsgate ; 

 and wherever they are seen, they 

 always preserve their relative dis- 

 tances and peculiar features. They 

 are all more or less alike in appear- 

 ance — the flints in the two upper 

 lines being larger than those in the 

 lowest line. 



At Kingsgate and the North Fore- 

 land respectively, two bands are 



