DE RANCE : UNDERGROUND WATERS IN LINCOLNSHIRE. 
27 
Iii the two shafts and borings made at Kirkstead and Woodhall, 
near Horncastle, in 1819, in a futile search for coal, no water appears 
to have been met with, except the saline spring known as Woodhall 
Spa, which was met with at a depth of 530 feet, and is believed by- 
Mr. Jukes Brown, of the Geological Survey, to have issued from 
the Inferior Oolite, but it is more probable that it came from the 
Lias. He thinks it probable that the beds passed through were as 
follows: — 
Ft. 
10 
360 
In. 
0 
0 
Ft. 
10 
350 
In. 
0 
0 
140 0 
Gravels and Boulder Clay 
Kimeridge and Oxford Clays 
Kellaway Rock, Clays, Cornbrash 
500 0 Great Oolite, Upper Estuarine 
640 0 Limestone Oolite and Northampton Beds ... 140 0 
1020 0 Lias, Upper, Middle, and Top of Lower ... 380 0 
The temperature of the water in 1883 was 59 6 Fah. In 1865 
it contained: — 
Grains per Gal. 
Chloride of Sodium 
„ Potassium . 
„ Magnesium 
,, Calcium 
Bromide of Sodium 
Iodide of Sodium 
Sulphate of Soda 
Bicarbonate of Soda . 
Carbonate of Lime 
Iron 
Silica 
Organic matter 
121517 
2 15 
86-84 
10500 
514 
273 
30*62 
4576 
9 38 
0*27 
033 
Trace. 
At Stamford, the Marquis of Exeter had a futile boring for coal 
put down, which commenced in the Kimeridge Clay, was discon- 
tinued at 500 feet, still in the Lias, as might have been expected. 
The gorge of the River Witham, at Lincoln, has cut through 
the following rocks in descending order: — 
