590 Strata near Swa?iwicJi 9 



and, what is more, over the London clay ; but such alternations 

 of yellow and brown sand I know of in no other place. 



From that point where these sands terminate and chalk 

 begins, to Ballard Head, which is visible in figs. 35. and 36. 

 is about half a mile. 



At the point of junction near the sand is an immense mass 

 of debris thickly overgrown with grass. The theorists say 

 that the green sand formation is there : I saw none of it. The 

 chalk is the lower chalk, or that without flint. We soon 

 began to see lines of flint towards the top of the cliff, which, 

 in some places, dip about 40° to the east. Towards Ballard 

 Point, they become quite horizontal, there being still chalk 

 without flint at the bottom. 



The author of the paper, therefore, was inaccurate when 

 he spoke of the chalk as beginning at Ballard Point, and of 

 the strata, as gradually becoming more and more elevated on 

 approaching to it. 



At Ballard Point, misnamed in Sir Henry Englefield's 

 work Standfast Point, commences that portion of the chalk 

 cliff which is most remarkable. Fig. 37., which is a minia- 

 ture of Mr. Webster's drawing in Sir Henry Englefield's 

 work, is characteristic ; but our author has also given fig. 36., 

 from what authority he does not state ; but it bears some re- 

 semblance to that in Conybeare and Phillips, and is exceed- 

 ingly bad ; and fig. 38. is equally so. 



The perpendicular lines of flint, from the top to the bottom, 

 extend from the point northwards just about 300 yards. I 

 went to see them in a boat three several days : I measured 

 the distances as nearly as I could by the eye, for it is impos- 

 sible to walk along under the cliff. I assisted my judgment 

 by observing the height of the cliff, and by the help of the 

 boatmen ; and I think 300 yards is exceedingly near the dis- 

 tance. 



The termination is exactly opposite a sunk rock, called the 

 Argyle Rock, from the wreck of an Indiaman of that name. 

 The perpendicular lines beneath the curved lines, which may 

 be called ordinates to them, are just fourteen in number, and 

 no more ; and from the first to the last of these fourteen is 

 only about ten yards along the foot of the cliff. 



The bending lines of flint are exactly twenty-two in num- 

 ber. They descend in a curve, but soon become quite hori- 

 zontal. From the point where the first curved line begins, to 

 that where they are all horizontal, is about fifty yards. 



From this point, all the way to Standfast Point, just a little 

 north of the rocks called Old Harry and his Wife, a distance 

 of upwards of three quarters of a mile, the lines of flint are 



