V 
APPENDIX. 
REPORT ON THE GEOLOGICAL SURYEY. 
To his Excellency, Lucius Faerchild, Governor of the State of Wisconsin: 
Sir : The instructions accompanying my appointment as 
Commissioner of the Survey of the Lead District, namely, that 
nothing need be done that had been satisfactorily done already, 
and that the time and money spent in this survey should be to 
collect that kind of information that would be of the greatest 
practical benefit to the mining region, have been strictly adhered 
to in my work. 
Your subsequent letter, however, representing the wishes of 
certain influential men in the lead district, namely, that the 
work provided for in the bill be prefaced by a careful and crit¬ 
ical survey of the mineral veins of the lead district in their 
relation to the lower strata, with a report of the same, as early 
as possible, defined clearly the work to be done first. Although 
I saw at the time the importance of this, I did not realize it 
fully until I had entered upon the work. 
The mines of the lead district, up to the present time, have 
been confined mostly to that portion of the strata above the 
water, where mining operations can be carried on at a trifling 
expense. But this portion is almost exhausted ; most of the 
important mines are worked down to the water, and as they 
are finished to this point in depth, they are abandoned. This 
is all the present system of mining (by individual enterprise) 
can do, all it contemplates doing. To work these mines 
deeper, or to follow these fissures into strata below those into 
which they have been already worked, a new system of min- 
