The doctrine of the unity of the human race examined on the principles of science This book, "The doctrine of the unity of the human race examined on the principles of science", by John Bachman, is a replication of a book originally published before 1850. 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.