W. Whitaker — Water Supply from Wells. Ill 



Tertiary times. Trochocyathus primus, which has been found 

 associated with Thecocyathus Moorei high up in the Upper Lias 

 of Somerset, is a very doubtful form, and the same may be said 

 of the still earlier species spoken of in the present paper. But in 

 Trochocyathus magnevillianus we have proof of the occurrence of an 

 unquestionable and more typical Turbinolian in the Inferior Oolite. 

 Of its precise position tbere I am unable to speak, but have great 

 reason for supposing that it is only a little removed from the Cepha- 

 lopod bed of the Upper Lias. 



Trochocyathus, 



With the preceding species occurs another coral which I refer to 

 the genus Trochocyathus. All the specimens, which, however are few 

 in number, are small in size and broadly attached, and in this 

 respect are more like examples of the genus Paracyathus than 

 Trochocyathus. They are wholly destitute of epitheca, and their 

 mural costaa are well defined and have transverse crenulations. The 

 calice is ovoid, convex, and consists in all the specimens I have 

 examined of a confused mass of tubercles, which are more distinct 

 towards the centre than outwardly. Neither the cycles of the septa, 

 nor the pali can be satisfactorily traced. 



Height of the corallum, 1 line. Greatest diameter of the calice, 

 It-t line. 



Y, — On a Eecent Legal Decision, of Importance in Connection 



with Water Supply from Wells. 1 



By W. Whitaker, B.A., F.G.S., Assoc. Inst. C.E. 



ABOUT, or nearly, forty years ago, two deep wells (with borings) 

 were made at Brentford, which, passing through Gravel, London 

 Clay, and the Lower London Tertiaries, reached the Chalk at a 

 depth of about 315 feet, and were carried some way into the last. 



One of these wells is at the Brewery on the southern side of the 

 High Street, now known as the Royal Brewery, and it continued in 

 use till its water became unfit for brewing-purposes, from the cause 

 noted below. The other is 99 yards off, north-eastward, at some 

 printing-works at the back of the houses on the other side of the 

 street. This one was made for a Distillery which has long ceased 

 to exist ; the well too having been abandoned, at least for its original 

 purpose of water-supply. 



Unfortunately, however, some years ago (from 1874 to 1882) the 

 Distillery well, as we may call it, was turned to a baser use, being 

 made into a cess-pit, by turning into it the drainage of the privy 

 belonging to the printing-works. This misuse has ceased for some 

 three years ; but not before a considerable deposit had been formed 

 in the well. 



The water of the Brewery well, once of good quality, having 

 been found to have become gradually contaminated, the owner, Mr. 

 M. Ballard, sought to discover the cause, and, the misuse of the 



1 Eead before the Congress of the Sanitary Institute of Great Britain, at Leicester, 

 Sept. 25, 1885. Extracted from vol. vii. of the Transactions of that Institute. 



