Review of earlier literature on Lower Silurian fauna in the upper Mississippi Valley: vol. 3, pt. 1, p. x-xlix. Bibliography of Minn. iron mining: Vol. 4, p. 613-616. List of publications bearing on petrography of Minn.: Vol. 5, p. 76-78. Half title: The University of Minnesota. A report on the geological and natural history survey of Minnesota; made in pursuance of an act of the legislature of the state, approved March 1, 1872. Published by the authority of the state.