Geology of Southeastern Iowa. — Gordon. 237 
be secured from dictionaries, encyclopedias, grammars and 
elsewhere. 
NOTES ON THE GEOLOGY OF SOUTHEASTERN IOWA. 
By C. H. Gordon. 
The surface geology of southeasteri:i. Iowa has received much 
attention from geologists owing to the favorable conditions 
this region offers for the study of the Subcarboniferous forma- 
tions. The fact that certain localities within this region have 
furnished fossils in wonderful variety and abundance has given 
it special favor with paLneontologists. The underlying strata, 
however, have received little or no attention. Having recently 
undertaken some investigations concerning the sub-driftrock- 
surface, certain facts relative to the deeper strata have fallen 
under the writer's notice which may be of sufficient importance 
to furnish an apology for this paper. Though the data derived 
from the records of deep wells are not of such nature as to be 
completely satisfactory, yet on the whole, the science of geol- 
ogy is under deep obligations to well drillers for information 
obtainable in no other way. Operations of this character 
having been pushed considerably of late in this section, either 
for the purpose of securing reliable supplies of water or to 
test for gas or oil, we have taken the opportunity to secure 
such records as were available. At Keokuk Mr. J. C. Hubin- 
ger has recently completed two wells, one 935 feet and the 
other 1,805 feet deep. The drillers are now at work on the 
third well and a fourth may be put down in the future. The 
wells are all located on the bluff overlooking the Mississippi, 
and the water is received in an artificial lake in the beautiful 
lawn adjacent to his palatial residence. From this lake the 
water is then carried in a chute down the face of the blufi 
about 130 feet where it is utilized in running two dynamos for 
furnishing incandescent lighting to the city. This method of 
securing water-power is certainly ingenious. The quantity of 
water obtained from the two completed wells is about 1,300 
gallons per minute. The third will bring it up to 2,000 gal- 
lons. The record here given is presented with a considerable 
degree of confidence as the results so far have practical agree- 
ment in all the wells. The record of the well at Sigourney is 
given as published by the common council of that place. That 
from Ottumwa was furnished by Mr. J. A. Hamilton. Mr. H. 
