22 Mr. Hopkins on the Structure of the 



Westerham and Limpsfield. I also found indications of it nearly as far to the east 

 as Seal. In some places (as at Dry Hill Farm, west of Sundridge) it assumes a 

 distinct anticlinal character ; at other places it appears to be a line of curvature, 

 the beds rising rapidly from the north, and being continued with a gradual ascent 

 to the greensand escarpment. I did not examine the country in the immediate 

 vicinity of Limpsfield, to ascertain whether this line was a continuation of the 

 Guildford and Godstone line or not. On that account, as well as from the circum- 

 stances of its assuming a somewhat different character and deviating in some 

 degree from the direction of that line, I have given it a distinct appellation. They 

 both probably belong strictly to the same continuous line of dislocation. 



From the eastern extremity of this line to the coast at Folkstone, I believe there 

 is no distinct analogous line of elevation, either along the greensand escarpment, or 

 between it and the escarpment of the chalk. The beds rise with a gradual and easy 

 inclination from beneath the chalk, and present no distinct evidence, so far as 

 I have been able to detect, of any determinate line of elevation. 



Transverse Valleys of the Seven Oaks Range of Greensand. — In this range are 

 several transverse valleys similar to those already described in the Leith Hill range. 

 One of the best-defined is that which descends from the escarpment by French 

 Street and through Hill Park east of Westerham. It is marked by a strong spring 

 in the escarpment, and from French Street a rivulet descends to the north along 

 the valley. I can feel no doubt of the origin of this valley having been due to a 

 transverse fracture. We have a similar case again at Ide Hill, (about two miles to 

 the east of the former,) though the valley is not so well-marked a feature as in the 

 former instance. We have, however, the strong spring in the escarpment, with 

 decided evidence of considerable local disturbance about the hill. A third case is 

 found in a narrow valley which descends from Whitley Mill (about two miles 

 south-west of Seven Oaks) immediately to the east of Riverhead. The disturb- 

 ances along this valley demonstrate its origin to have been in a dislocation. The 

 stream which works the mill originates almost entirely in the copious spring just 

 above it, and in the escarpment at Everlands we find the corresponding spring. 

 This has evidently been a strong fracture, and we may observe that its direction 

 exactly ranges with that of the valley along which the river Darent penetrates the 

 chalk. 



Maidstone, Ashford and Folkstone Range of Greensand. — On the east of Seven 

 Oaks there is a break in the greensand escarpment, beyond which that formation 

 occupies a considerably wider space opposite the entrance of the Medway into the 

 chalk hills. The smallness of the general dip corresponds to this increase of width, 

 and the pheenomena of elevation appear to be less marked and interesting here 

 than in the greater part of the area occupied by the greensand. East of the Medway 



