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.
The past and present: an introductory lecture delivered to the class in Hahnemann Medical College, October 25th, 1865
The past and present: an introductory lecture delivered to the class in Hahnemann Medical College, October 25th, 1865