This is a book that has NOT had its cover attached. The book cover IS included. You may bind it yourself or have a bookbinder do it for you. This is Dr. Kellogg's famous book on light therapeutics. It's a practical book and lists many diseases and how light can help with them. Dr. Kellogg was the medical director of The Battle Creek Sanitarium for 60+ years.
When he talks about "arc-light" think "sunlamps".
When he talks about "photophores" think heat lamps.
There is so much practical medical information that you will never hear from todays practitioners. Fascinating, useful, information.
These books have been in storage for 99 years.