ENPages
p.4
4
o Green + Blue Shales + Limestones.
as above._
o Galena Limestone.
as above.
6. Trenton Limestone
as above
6 St. Peter's Sandstone.
as above.
6 L. Magnesian Limestone
as above.
o Potsdam Sandstone
as above.
o Azoic
As above.
Economical Geology.
Artesian Wells.
v Peat.
Iron.
Copper.
p.5
5
Lead.
Limestone
v Quicklime
Waterlime.
Flux.
Building Rock.
Rough
Cutting rock.
Polishing "
v Brick Manufacture.
v Pottery
o Pisciculture.
vo Agriculture.
v Improvement of Forests through selection
v Hygrometry.
Observations on Animal + Vegetable Life
Special Topics.
cover page
(copy)
Geology of Wisconsin
prepared for
Wallings "Atlas of Wisconsin"
at request of J. A. Horrigan
July 1874
Mr. sent to R. M. Tackabury - No 2 Aspinall Terrace Detroit Mich.
No charge except 4 Atlasses. [Eren?] [theat?] refused
p.1
1
Wisconsin
Geology.
By I. A Lapham. LL.D.
State Geologist.
The first considerable effort to develop the geological features of the territory now constituting the state of Wisconsin, was made in 1839, by Dr. D. D. Owen, Dr. John Locke, and others, in what is Known as the lead region, chiefly in the counties of Grant, Iowa and La Fayette, in the southwestern part of the state.
This work was done in pursuance of a resolution of Congress, calling for information relative to the mineral lands of the United States, and the results were reported in an Executive document (1) with maps, sections and drawings of fossils. The next was also made by Dr. Owen, or under his direction, on behalf of the general government, being a Reconnoissance [Reconnaissance] of the Chippewa Land District which then included a large portion of the state The results were reported in 1848,(2)
(1) House Ex. Doc. No 239, 26th Cong. 1st Session 1840
(2) Senate Ex Doc No 57 - 30th Cong. 1st Session 1848
