of Halkin Mountain, Flintshire. 407 
the stones at Flint mill were highly approved, and found to be 
a substitute for the French buhrs, they turned their attention to 
the subject. 
Thev were advised to lay speciinens of the buhrs before the 
Society of Arts, &c. immediately, lest they might be anticipated 
by some other person in their pretensions to the premium offered, 
and they accordingly ventured to do so, in February 1820 ‘un- 
der the name of Flint Buhrs); but not having then had sufficient 
trial made cf them, they were not in possession of certificates 
sufficiently extensive on which to rest their claims to the notice 
of the Society. 
As, however, they are now able to adduce proofs that the 
Halkin buhrs are fully equal to the French, and in some cases 
are declared to be actually superior to them, they trust that the 
Society, in looking to the national importance of the: discovery, 
will pass over the trouble that was last year so unintentionally 
occasioned, and again take the matter into their consideration. 
They request permission to lay before the Society the accom- 
panying certificates and letters on the subject ; and in order to 
show that they have not been selecting a few, and withholding 
any less favourable to their hapes, they heg to state the result of 
every sale made by them up to the end of the last year, and to 
add a short review of the particular certificate connected with 
each case, observing at the same.time that not one unfavourable 
or unsatisfactory trial has yet occurred. 
Some of the buhrs got on the discovery of the quarry were (as 
before stated) converted into mill-stones, and put up about three 
years ago at Mr. Evans’s mill, in the borough of Flint, who cer- 
tifies that “he used them nearly two years occasionally for wheat, 
but chiefly as gray-stones, in which they excelled; that at first 
he used them seldom for wheat, but afterwards more and more 
frequently, as he found them answer the purpose; and, by way 
of comparing them with the French stones, he took six measures 
of wheat, and ground one-half on the Halkin stones, and one- 
half on the French stones; there was some very slight difference 
in the flour, which was in favour of the French; but he did not 
consider it as a fair trial, as the Halkin stones were not at the 
time properly faced for wheat grinding, and if the French stones 
had been faced as rough, the flour from them wouid not have 
been better than the other. Bread was made from the two 
kinds of flour, but no one could distinguish between the two. He 
then had the -Halkin stones regularly faced and cracked as 
French, and has found them ever since equal to the French 
stones in every respect whatever.” 
Others of the buhrs, got about the same time, were used more 
cautiously by a millwright, who made a large pair of millstones 
of 
