472 ILLINOIS STATE ACADEMY OF SCIENCE 



Let me impress you that my ideas as I have expounded 

 them to you this afternoon ^r« the ideas of Rosenow, 

 Murphy, Norvitzky, Smith, and a host of others who 

 have investigated the subject from a wholly neutral 

 standpoint. I regret that I have not the ' ' silver tongue ' ' 

 of Bryan, that I might plead the cause of a healthy 

 mouth in a way that would send a string of you to the 

 dentists this very afternoon. 



But whatever idea you may cany away from this dis- 

 course please — oh — please see that this accompanies you 

 Avherever you may go : 



''DON'T LET YOUR TEETH ACHE". 



