Letters Sent to Prof. Dr. Flinn [Dr. Frederick B. Flinn], October 28, 1925

COPY GERICHTLIOH-MEDIZINISCHES INSTITUT ZURICH, den 28th October 1925 der UNIVERSITAT ZURICH (Direktion: Frof.Dr.H.Zongger Prof. Dr. Finn, Prof. of Industrial Hygiene Dep. of Physiologie Columbia University New York Dear Professor Finn: Some months ago you sent me a very interesting work on your experiences in tetra ethyl lead. It is very interesting for me because the government of Switzerland has forbidden the fabrication and importation of this benzin I had the mischance to get a very serious polineuritis for some months so that I could not give you any information on watch industry and application of thorium preparation in our watch industry of Switserland. Since to day I had only negative news no one of the inspectors made observations of this kind. But I heard that the director and one of the assistant of the great french factory of this products died some months ago both with the same symptoms, without doubts by the continuous work with radium, thorium and similar substances. I was invited by the dean of the medical school of the Harvard University to give Dunham lectures but my toxique polineuritis will not permit me to come to the United States this year. I have sent to you my latest work on poisonings "Jertumer in der Vergiftungsdiagnose und Therapie" by the editor. Very truly yours, (signed) H. Zangger