Lecture on the great unfinished problems of the universe This book, "Lecture on the great unfinished problems of the universe", by O.M. Mitchel, is a replication of a book originally published before 1859. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.