BKNSTED— ox TUE GEOLOGY OF M.VIDSTONE. 



381 



qaarry, we pass on to the other members of the Lower Greeiisand 

 found in tlio Maidstone district. Below tlio Kentish rag beds comes 

 tlie Atherlield clay. This formation is passed tln-ough in tlie railway- 

 cutting at Tetsom, where it is seen basseting out from beneath the 

 hills of ragstone. A list of the fossils of this division of the Lower 

 Cretaceous rocks has been published by Dr. Fitton in the Transac- 

 tions of the Geological Society, vol. iv. part 2, 183G. 



The junction with the Weald clay may be clearly traced at this place, 

 and laminated beds of fawn-coloured stone are met, containing seams 

 of small Paludina), Cyprides, 



Section of 



A Boring at Mr. Fish's 

 Brewery. 



12 feet. 



88 feet. 



30 feet. 



10 feet. 



30 feet. 



teeth and bones of fish, and 

 also the elytra, or wing-cases, 

 of beetles. In 1851, tlie Weald 

 clay was met with in digging 

 a drain in St. Faith's Street 

 (Maidstone). At a depth of 

 from eight to ten feet, a series 

 of slate-coloured slabs of stoue 

 was found, in which W^ealden 

 fossils (Cypris) were to be seen 

 lying in close proximity. The 

 edges of these slabs were round- 

 ed, and a ferruginous border of 

 a quarter of an inch enveloped 

 the stone. 1 conjecture that 

 it is this border which is found 

 in a broken and waterworn 

 state, mixed with the drift, at 

 various places round Maid- 

 stone. 



In 1847, Mr. Fish com- 

 menced a boring for the sup- 

 ply of water for his brewery. 

 Wishing to obtain a supply 

 free from the acidity of de- 

 cayed vegetable matter, he set 

 out with the intention of iioino- 

 sufliciently deep to secure that 

 result. After passing through 

 about twelve feet of the debris 

 of the ancient Medway,hecame 

 to a dark-blue clay of soapy 

 texture, witli veins of greyish 

 wliite. No fossils were ob- 

 tained. In this clay a supply 

 of water was obtained, but it 

 was not equal to tlie demand, — the water, turbid from the clay which 

 it held in suspension, re(|uiring a long time foi' its precipitation. 

 After next passing through about 88 feet of clav, a bed of iine- 



45 feet. 



5 leet. 



40 feet. 



90 feet. 



Debris of ^ledway, gravel 

 Hints, rolied laur-stone. 



Atlierfielcl clay (stiff blue 

 clav). 



Mixed sands (flue-graiiied 

 greyish- white). 



Red, blue, aud yellow clay. 



Grit and clay (grceuish-grcy) 



with Pahulina. 

 StraUiin of Bethersdeii 



marble. 



Very hard close-grained 

 brown sands. 



Variegated clays (red and 

 white). 



Brown sand. 



Blue clay 

 shells. 



300 feet. 



with crushed 



