236 



EEPOBT 1886. 



vol. xl. part III. p. 485). The Lias, White Lias, and Rhsetic continued 

 to 617 feet from the surface, the latter resting on a slightly eroded series 

 of marl, followed bj variegated sandstone 60 feet in thickness, which are 

 referred to the Trias. At 676^ feet occurred carboniferous sandstone 

 with fossils, which, with the underlying marls and limestones are regarded 

 as a local littoral deposit, lying on the true carboniferous limestone 

 occurring at 699 feet. The beds beneath are very remarkable, but do 

 not affect the present inquiry. The total depth reached was 994 feet. 

 As in the other boring, the water was saline, containing 1,500 grains of 

 mineral salts to the gallon, the quantity being only 100,000 gallons per 

 ■day. The water stood 20 feet higher than at Kettering Road, giving a 

 gradient (I") of 3J feet per mile to the north-east. 



In the boring lately carried out for Mr. J. Fleming (of Newcastle-on- 

 Tyne), at Orton, five miles west of Kettering, and twelve miles to the 

 N.E. of Northampton, the Triassic beds were absent, and the beds of 

 doubtful age were 24 feet, the underlying carboniferous beds were absent, 

 and a quartz-felzite 74 feet thick still persisted when the boring was 

 abandoned at 789 feet. 



Details of Wells and Borings, Cheshire. Collected hy Mr. 0. H. Morton, 

 F.O.S.,from Mr. H. Aston Hill, C.E. 

 1. The Wallasey Waterworks, Great Float, near Birkenhead. i.a. No. 1 well, 1861. 

 Borehole enlarged to 13 inches, and deepened to 400 feet from surface in 1876. No. 

 2 well 1874; not deepened since. 2. 23 feet. 3. No. 1 shaft, 7 feet diameter, 90 

 feet from surface. Borehole 13" diameter, 400 feet from surface. No. 2 shaft, 7 feet 

 diameter, 90 feet from surface. Borehole 18'' diameter, 400 feet from surface. 3a. 

 4. The pumping is almost continuous, and the working level of water is about 40 feet 

 from surface. After stopping four hours the water rises to 24 feet from surface. 4«. 

 When No. 1 well was sunk in 1861, the water rose to within 9 feet of the surface. 

 Cannot tell how high it would rise now, being unable to stop pumping for a suf- 

 ficiently long period. 5. 1,250,000. 6. No. No. 7. No. Do not stop pumping 

 sufficiently long to see what height water would rise to; but as a rule our working 

 level is about 17 feet below mean level of the Birkenhead Docks. 8. Not had an 

 analysis made recently. Water is considered of excellent quality, and does not 

 possess any marked peculiarity. 



9. Red marl . 



Sand and marl . 

 Marl .... 

 Clay, stones, and sand 

 White rock 



Total 



lO. Probably. 11. Yes. 12. It is believed so. 13. No. 14. No. 15. Don't 

 know of any deep wells having been discontinued ; but several shallow ones have 

 Jbeen, in consequence, no doubt, of surface contamination. 



