H4G The American Geologist. Deconibi-r, 1897 
Synopsis. 
Part I. Geolofiy. 
Chapter I. Topography and Special Surface Features. 
1. Topographic description of the district, the elevation of prominent 
points, explanation of accompanying maps. 
2. Surface features as modified by lakes, springs, abandoned river 
channels, river terraces, creeks and the smaller streams. 
Chapter II. Glacial Geology. 
1. The glacial drift, thickness, extent, character, origin.— The St. 
Croix moraine, the level tracts and valleys. 
2. The effect of glacial action upon earlier formations. — On the dia- 
bases, glacial striae.— Erosion of sandstones and shales, the gla- 
cial St. Croix river.— Summary. 
Chapter III. Stratigraphic Geology. 
1. Summarized statement of local geology. 
2. Additional data. — Tiie sandstone conglomerate, shales.— Subdivis- 
ion of the lower sandstone into three members upon litliologic 
and paleontologicgrounds.— The marginal conglomerates. —Clas- 
sification. 
Chapter IV. Geology of the Igneous Rocks. 
1. Summarized statement. 
2. Additional description and subdivision, jointing, dip.— The sej)- 
arate flows, profile at the Dalles, basis of division, iiumber and 
total thickness. — Minor variations in character, breccia and vol- 
canic ash.— Folds. — Unconformity. 
I'art II. Mineralogy. 
Chapter I. Lithology of the Sedimentary Rocks. 
Original constituents, alterations, local phases. 
•Chapter II. Lithology of the Igneous Rocks. 
Original character. — Local variations, ophitic, porpliyritic and 
amygdaloidal phases, flowage, tuffs, breccias.— Alteration i)has- 
es and products. 
CShapter III. Minerals. 
Original and Secondary. — Analyses. 
Part III. Paleontology. 
Chapter I. Review of the Faunas Previously Described. 
(Chapter II. A New Fal^na. 
Favorable localities, principles of classification, general character 
of the fauna, lines of variation. — Descrii)tioiiof new forms. 
Chapter III. Summary and Correlation. 
The Baraboo fauna — Place in tlie Cambrian. 
