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.
Read before the Michigan State Dental Society, April 8-12, 1918, and reprinted from Journal N. D. A., August, 1918.
