This book, "Practical Essay on the Strength of Cast Iron and Other Metals: Containing. 1", by Thomas Tredgold, Eaton Hodgkinson, Verne L. Roberts, is a replication of a book originally published before 1846. 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.