with an Account of the recently discovered Buhr stone* 25T 
Millstones of the Flintshire buhrs, manufactured by Messrs 
Bishop and Company at Nant-y-Moch^ near Holywell, or by 
their agent J ohn Coleman of Liverpool, have been recently sent 
to different parts of Lancashire, to Leeds, Dublin, &c. ; and 
there is every reason to believe, that the quarries of Halkin will 
render Britain independent of foreign countries for the supply of 
this very essential article. By the following statement of prices, 
it appears, that the Halkin buhr-millstones may be had at about 
one-half the cost of the French millstones used in this country : 
Feet. In. 
A pair of 4 0 
millstones complete, 
£U 
0 
Ditto, 
4 6 
ditto. 
- 
32 
0 
Ditto, 
4 8 
ditto. 
- 
35 
0 
Ditto, 
4 10 
ditto. 
- 
38 
0 
Ditto, 
5 0 
ditto. 
. 
42 
0 
Ditto, 
5 6 
ditto, 
52 
0 
01 
0 
0 
0 
0 
0 
Thickness, 
.. of Runners^ 8 inches, 
of Bedstones^) 6 inches* 
These buhrs are shipped at £ b*, 6s. ton. They may be 
had from 50 lb. to several hundred weight each. The French 
buhrs average about forty to each ton. 
On the western side of Halkin mountain, about half a mile 
N. NW. of the buhr-quarry, lies the bed of Porcelain-clay. On 
two sides of the clay-pit, I found at the surface limestone of a 
light-grey colour, containing many large bivalve petrifactions, 
which were also calcareous. This limestone presented a mural 
surface a few feet high towards the clay, which seems to occupy 
a considerable hollow in the beds of limestone. I did not dis- 
cover the junction of the siliceous rock with this limestone ; but 
the colour of the latter, the nature of its petrifactions, and its 
little inclination, render it doubtful whether this should be con- 
sidered as the same limestone which lies under the chert on the 
to be fixed in with the best French buhrs some months ago, and, as far as we can 
judge in such cases, I think they will answer every purpose of French buhrs. 
Yours respectfully, Joseph Stephens. 
“ Steam Mill, Harrington, Liverpool. 
To the Welch Company.” 
VOL. IV. NO. 8. APRIL 18^1. 
11 
