The experimental determination of mental discipline in school studies Descriptive geometry and mental discipline This book, "The experimental determination of mental discipline in school studies Descriptive geometry and mental discipline", by Harold Ordway Rugg, is a replication of a book originally published before 1916. 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.