The public school mental arithmetic based on McLellan and Dewey's Psychology of number This book, "The public school mental arithmetic based on McLellan and Dewey's Psychology of number", by J.A. McLellan, is a replication of a book originally published before 1899. 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.