Time scales, horizontal and vertical, contrived since 1853 for numerical picture writing and reading This book, "Time scales, horizontal and vertical, contrived since 1853 for numerical picture writing and reading", by J.F. Campbell, is a replication of a book originally published before 1880. 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.