Miscellaneous Intelligence. ; 295 
Phence the expedition proceeded northward, each corps being requir d, 
on the average, to overrun and examine thirty quarter sections daily, 
nd to report to myself on fixed days at regularly appointed stations : 
receive which reports, and to examine the country in person, I cross- 
| the district under examination, in an oblique direction, eleven times 
he course of the survey. Where appearances of particular interest 
sented themselves, I either diverged from my route, in order to be- 
y upon these a more minute and. thorough examination; or, when 
time did not permit this, I instructed Dr. John Locke, of Cincinnati, 
{formerly of the geological corps of Ohio, and at present professor of 
chemistry in the medical college of Ohio,) whose valuable services I 
had been fortunate enough to engage on this expedition, to inspect these 
in my stead, SB 
_ “By the 24th of October, the exploration of the Dubuque district 
was completed, and the special reports of all the townships therein 
Were dispatched to your office, and to the office of the register at Du- 
buque. On’ the 14th of November, the survey of the Mineral Point 
_ district was in a similar manner brought to a.close; and by the 24th of 
November, our labors finally. terminated at Stephenson, in Illinois; the 
 €xaminations of all the lands comprehended in my instructions having 
‘been completed in two months and six days from the date of our actual 
Commencement in the field. Also several thousand specimens—some 
(Of rare beauty and interest—were collected, arranged and labelled. 
a “The weather was favorable, and the winter did not set in with sever- 
ity until about a fortnight later than is usual in that latitude; yet, the 
Same day on which the survey was completed, a severe snow-storm 
Sceurred, a. gale. blew up from the northwest, the thermometer fell to 
Ror 14 degrees below zero, and the expedition could not have contin- 
‘ued its operations in the field a single day longer. , 
_ “The district of territory explored lies nearly in equal ogee 
both sides of the Mississippi river, between latitude 41 and 43. degrees ; 
__- S°mmencing at the mouth of Rock river, and extending thence. north, 
_. "pwards of 100 miles, to the Wisconsin river, which discharges cana 
__ Into the Mississippi immediately below Prairie du Chien. 
“The average width of this body of land exceeds 200 miles. It 
-Comprehends about 11,000°square miles, equalling in extent the state 
: of Maryland.” . pene : 
__ We cite from the report at the present time only the following gene- 
talremarks:— ps 7 
ot 
The general geological:character of the country explored may be 
briefly summed up. It belongs to that class of rocks called by 
t geologists secondary, and by others occasionally included in 
nsition series, Jt belongs; further, to a division of this class of 
? 
