The anorthosytes of the Minnesota coast of Lake Superior The laccolitic sills of the north-west coast of Lake Superior This book, "The anorthosytes of the Minnesota coast of Lake Superior The laccolitic sills of the north-west coast of Lake Superior", by Andrew C. Lawson, is a replication of a book originally published before 1893. 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.