Letters Received to A. Roeder, March 5, 1926

P. OFIVED Ophimbia Unitiersity MAR 0 1923 Opilege of and EPIDEMIOLOGY 437 WEST 59TH STREET, NEW YORK INDUSTRIAL HYGIENE PUBLIC HEALTH ADMINISTRATION INSTITUTE OF PUBLIC HEALTH March 5 I926 SANITARY SCIENCE Mr. A. Roeder, U.S. Radium Corporation, waters New York City, N. Y. Dear Mr. Roeder; After a long study with animals and examination of girls employed in painting with luminous material, I am convinced that radium or mesothorium was not the cause of jaw trouble among the girls in the Orange Plant. Both from the statistical and experimental evidence, one can come to no other conclusion. It is true that at this time we can not explain these cases but there is no evidence that radium is the cause of their trouble. I expect to have my completed report in your hands by the end of next week and then you can see how I arrived at this conclusion. Of course I cannot tell what future investigation may show but at this time I cannot but feel warranted in making the above statements. Certainly the remarks as published in the American is full of untruths. All of my own experiments and those is eliminated of others show for example that the radium material and does not remain in the system as the article said. I trust that your company and others will see their way clear to finance a further research as to some physiological factors connected with radium. Yours truly Fredenick B. This