Report on the geology of the Lake Superior land district

Classification and nomenclature of the rocks.

Azoic system.

Granite rocks of the Azoic period.

The iron ores and associated rocks.

Economic geology of the Azoic series.

Composition of the trappean rocks.

Mineralogy.

Lower Silurian system, Potsdam, and calciferous sandstone.

Lower Silurian system continued; Upper Silurian and Devonian series; by James Hall.

Miscellaneous observations on the Palæozoic series.

Chemistry and economic geology of the Palæozoic series.

Description of new or rare species of fossils from the Palœozoic series, by James Hall.

On the superficial deposits of this district, by F. Desor.

On the elevation of mountain chains.

Parallelism of the Palæozoic deposits of the United States and Europe, by James Hall.

On the observed fluctuations of the surfaces of the lakes; Magnetic variations, comparison of terrestrial and astronomical measurements; by Charles Whittlesey.

Botany, by W.D. Whitney.

Appendix: annotations and additions.