Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
The influence of physical agents on life : being an introductory lecture to the course on chemistry and physiology in the University of New-York / by John W. Draper. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)