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 National Dental Association, Milwaukee, Wisconsin, August 15-19, 1921. Reprinted in Journal N. D. A., June, 1922.
