Proceedings. xxiii 



which are of considerable interest. Sections of Grins ted Clay 

 and Lower Tunbridge Wells Sand were encountered in the early 

 part of the route, the former yielding numerous specimens of 

 Ci/pris. The central line of the watershed of the Weald was 

 followed to Selsfield Common. The surface here is rather over 

 600 feet above the sea ; a fine view across the Weald is obtained, 

 the Lower Greensand escarpment of Leith Hill and Hindhead 

 standing out in a very striking manner. Here Mr. Topley gave 

 an address on the geology of the Weald, sketching out the mode 

 of formation of the beds, the successive physical disturbances to 

 which they have been subjected, and the mode by which the 

 present surface-features have been produced. 



Mr. J. W. Hulke, F.R.S., also described the Wealden Reptilia, 

 referring especially to h/uajiadon. 



Professor T. R. Jones followed with some remarks on the 

 invertebrata of the Wealden beds, showing that most of the 

 shells are such as lived in fresh water, which was either the 

 estuary of a large river or had connection with it. 



The party then walked to Eockhurst, and were there received 

 by Mr. Charles Hill, F.S.A., who conducted the members 

 through the grounds. The natural rocks are very fine, formed 

 of the upper beds of the Lower Tunbridge Wells Sand. The 

 beds are jointed, the joints having been widened out by 

 weathering, and partly also by gradual slipping. Mr. Hill 

 during thirty years has noticed a considerable increase in many 

 of the spaces. 



The most famous rock, " Great upon little," is a mass of stone 

 weighing between 400 and 500 tons, poised upon a small pedestal. 

 This rock is covered with inscriptions, some of them dating 

 1622, 1702, 1705 ; the names of Pitt and Fox, who are known 

 to have visited the spot, were inscribed here, but, being on the 

 side most exposed to the weather, they are now effaced. 



On leaving the grounds of Eockhurst the walk was continued 

 to West Hoathly Station, where tea was provided at the Railway 

 Inn. South of the station is a tunnel through the Wadhurst 

 Clay, from the waste-heaps of which Cypridea, Cyrma, Pahidina, 

 with sun-cracks and other markings, were obtained. 



On Saturday, 18th July, an afternoon excursion was made, in 

 conjunction with members of the Holmsdale Club, to Guildford 

 and Shalford. The day was very fine, and the party enjoyed the 

 pleasant and picturesque walk by the river side, ascending St. 

 Katherine's Hill by the way, whence an extensive view was 

 obtained. The distance to be traversed being short, abundant 

 time was afforded for collecting. The river is very rich in micro- 

 scopic life, and the microscopists gathered an abundant harvest. 

 Water plants, including several species of pond-weed (Potamo- 

 ijeton), were also found in profusion. 



