32 



W. WHITAKEE ON SOME BOEINGS IN EENT. 



five have been found here. I may add that the pyritized Ammonites 

 and the Serpula vertebralis at once reminded me of the Oxford-Clay 

 fossils that I was aecnstomed to lind in Bedfordshire, in my first 

 year of Survey life, no need to say how long ago. 



List of Fossils from the Oxford Clay (at depths from 945 to 965 

 feet). All the specimens very small and fragmentary. 



Ammonites crenatus, Brug. 



hecticus ? Bein. 



Lamberti, Sby. 



phcatilis, Shy. 



minute forms, possibly young. 



Belemnites. 



Alaria trifida. 



Very minute Gasteropod. 



Astarte. 

 Corbula ? 

 Pecten. 



Crustacean claws and limbs. 

 Bairdia, near to Juddiana, Jones. 

 Serpula vertebralis, Shy. 



Serpula, sp. 



Acrosalenia (?), small spine, 

 Cidaris, plate and small spine. 

 Pentacrinus Fisheri*, Baily {Forbes, 



MS.)? =P. sigmariniensis. 

 sp. 



Small turbinate coral. 



Oristellaria crepidula, F. and M. 



rotulata, Lam. (var. with cupped 



centre and raised septa). 

 (var. with smooth outside). 



Wood. 



3. Frindshury. Wkiteiuall Cement WorJcs (Formhy's). 1882. 



Sunk and communicated by Mr. T. Tilley. 



30 feet above high- water mark. 



Bored throughout, 4 inches diameter, lined with tube. 



Directly the rock was pierced water rose to the surface, throwing 

 out a large quantity of sand and pebbles. It rose to a height of 

 61 feet above high-water mark. The water is bright, free from 

 sand, and has been analyzed by Dr. Voelcker. 



Yield 60 gallons a minute. In December 1885 the supply was 

 as strong as when first tapped. 



Chalk 



[aault,192ft.]{g^^^*J;^^y_ 



Thickness 



in feet. 



618 



189^ 



Depth 



in feet. 



618 



810 



To [Lower] Grreensand, in which water was got at the depth of 815 feet, 

 there being apparentlj^ a hollow, the tubes going freely 18 feet below where 

 the tools had been. 



This section, which is barely 1^ miles westward of the dockyard- 

 borings, agrees well with them as to the thickness of the beds ; for 

 although there is here less Chalk, it must be remembered that the 

 site is not at the top of that formation, though near it. 



Some of the tubes are said to have become magnetized, so that in 

 lowering a bar it was pulled over to one side and held firmly ; some 

 of the boring-rods too were acted on in the same way. 



* The Eev. O. Fisher says, in a letter to Prof. Judd, that Baily (Ann. Nat 

 Hist. July 1860) has wrongly referred this species to the Kimeridge Clay, 

 whereas it was found by Mr. Fisher, in Oxford Clay, at Weymouth. 



