Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
An oration on the improvements in medicine: delivered before the Philadelphia Medical Society, twelfth month, 13th, 1837
An oration on the improvements in medicine: delivered before the Philadelphia Medical Society, twelfth month, 13th, 1837