225 pages, 161 pages, 55 pages, 4 unnumbered leaves of plates : illustrations (some color), folded color map ; 27 cm
OCLC
ocm29659754
"Observations on the Ontonagon silver mining district and the slate quarries of Huron Bay, by C. Rominger": p. [151]-166; "Report on the salt manufacture of Michigan, by S. S. Garrigues": p. [167]-216.