270 PROCEEDINGS OF THE GEOLOGICAL society. [ Mar. 8, 
in Murchison’s ‘ Silurian System’) a boring was made at Kents Rough, 
near Adderly in Shropshire, about two miles to the south of Audlem, 
for coals, but brine was found at a depth of 300 feet. This is, I be- 
lieve, the most south-eastern point at which salt has been proved in 
this district. 'To the south of this patch of lias, as has been before 
stated, the red sandstone again crops out, dipping in a north-westerly 
direction and forming the elevated ranges of the Clive and Hawkstone 
hills, and thence extending near Market Drayton and Ashley Heath 
to Whitmore. 
This outher of lias occupies the centre of the trough of the red 
sandstone, having the basset edges of the red marls lower on the north 
or Cheshire than on the south or Shropshire side. In this south- 
eastern salt district no rock-salt has yet been actually proved, but the 
brine at and between Audlem and Nantwich is found close under the 
soil and running into the river Weever. This peculiarity is possibly 
explained by the circumstance just mentioned, the southern side of 
the trough being more elevated than the northern. Thus the water 
sinking down along the above-mentioned ridges would be thrown out 
along the line of country lying to the south-east of the Peckforton 
range; it would then spread along the surface of the measures and, 
as at Audlem, impregnate the sand. 
From Audlem to Nantwich, a distance of seven miles, brine is found 
on both sides of the river. To the north of Nantwich the brine for 
a short distance has not been proved. The brine (as I am informed 
by Mr. Peter Hodgkinson) is tapped at 91 feet 6 inches below the 
surface (or about 86 feet above the level of the sea). The measures 
passed through are marl 20 feet, quicksand 1 foot 6 inches, clayey 
marl with gravel at the bottom 28 feet 6 mches, flag overlying the 
brine 1 foot 6 inches. 
At Acton, a mile from Nantwich on the Chester road, a weak brine 
rises to the surface. The analysis of the Nantwich brine as made by 
Dr. Daubeny (Phil. Trans. for 1830) differs very slightly from that 
at Middlewich. 
At Broad Lane in sinking a well brine was found ; this is the most 
northerly place at which brine has, I believe, been found im the vicinity 
of Nantwich. 
The most easterly, I believe, is at Hatherton: this place is situated 
three miles to the north-east of Audlem. On the western side the 
brine has been found at Austerton and Baddington, at which places it 
has been worked. 
The most northerly place to the west of Nantwich contaiming brine- 
springs is Baddeley, five miles to the north-west of Audlem, and about 
three miles to the west of Nantwich. At Spurstow, a village situate 
on the south-east side of the Peckforton hills, a mmeral spring is 
found in a field forming part of the rising ground at their foot: it 
rises out of a stratum of red and white clay which has been penetrated 
into nine feet. This water, when it rises, has a slight opake or opa- 
line appearance ; on standing some time it deposits this cloudiness 
and appears remarkably clear: it exhales sulphuretted hydrogen, 
