This book, "A treatise on the transformation of the intestinal flora, with special reference to the implantation of Bacillus acidophilus. 1", by Leo Frederick Rettger, is a replication of a book originally published before 1921. 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.