Boilers and furnaces considered in their relations to steam engineering This book, "Boilers and furnaces considered in their relations to steam engineering", by William M. Barr, is a replication of a book originally published before 1898. 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.