be is TO CORRESPONDENTS. es 
Mr. H. Merxxe on. Friction, Kc. came to hand too late for the a 
“present Number. : Mie) 
es 
To THE OWNERS AND Lessres oF COALS AND OTHER sear 
Minerats ; particularly those whose Works may be suffering from 
any of ‘the perplexing natural Difficulties, to which. eters 
Operations are liable. ee : : ‘ 
Ma. Fargy, Sen, Mineral Si veyor and Eesha begs to an) 
nounce, that ‘those considerable Surveys in Scotland and in: England, 
on which he has for three years past been so entirely occupied, as to” 
decline attending to many professional applications, are now /¢ 
pleted; and that.in consequence, some Months of his Time during. 
ensuing Summer and Autumn are yet-at his disposal, and for waich 
would be glad to form Engagements. 44 
Tt has been Mr. Farey’s object of Study and-his long and pxtensive © 
practice, to give effect to the practical and loeal knowledge of the re- ~ 
sident Agents entrusted with the management of Mineral Works, by 
advice on any of the impediments to a profitable conduct of such 
Works, arising from Faults, excess of Water, Exhaustion of the Liban 
Seams, Veins or Beds, &c. &c. by the application of new and scientific 
principles, in the investigation of whatever is regular in the Strata and 
Veins of the Estate and its vicinity, whereon he is consulted, pie 
the investigation, founded on ‘correct prinéiples and extensive experience 
of all the various Deficiencies, Contortions, Dislocations and Aecidents, 
which the Strata and Minerals have experienced, at the time, or since 
they were first deposited. ' 
And where such are desired by the Owner or Lessee, Mr.. Farey a: 
been used, to embody all the informationso-acquired, in Mineral Maps, 
Sections and Reports, which will record for future use, and hand down 
to the heirs of the Estate, those essential particulars of the subterra-— 
nean facts and Works, within it; whith will hereafter ina principal de- 
gree affect the value, ‘and perhaps the practicability of getting those 
deeper portions of the Minerals, which in almost every instance remain. 
Already a large number of Mineral. Works have experiented great. 
delays, and unnecessary Expenses, because the making and preereng, i 
ef such Documents as have been alluded to, were not’earlier unc 
steod and correctly practised; but at a period not very distant, th 
evil will be experienced in a tenfold degree, j 
Detached and imperfectly deseribed Surveys and indedgrednd eee 
ments exist, on most Estates, as well as a still larger body of correct 
knowledge, in the Memories of the Agents, Overseers, and Workmen, | 
which ere long will become quite useless, or be irretrievably lost, toge= 
ther with all the benefits which these can confer, unless they dre col 
lected, investigated, compared and completed, in such Maps, Sections: 
and Reports, as it has ‘been a pce eet 7 Mr. F's pisetice,, to 
. form, for Mineral Owners, * 
Mr. Farey’s terms, and the nature’of his prnetice, may be known by 
Letter, or by an Interview, at his House, No, 87, Eee aide 
' Fitzroy Square, Loudon. ) 
- 
Ase iss, 
