Document 880DG6NQO0GRQOppBoj4XX6B

be: Mr. Dick Davis - G.O. Mr. Lee Miller - G.O. January 19, 1952 Dr. H. V/. Jackson National Dairy Research and Development Division 801 Waukegan Road Glenview, Illinois Dear Dr. Jacksom Mr. Dunne of our Chicago office has requested the Medical Department to forward toxicity data for our products, the Arodors. Although we have limited toxicity screening data on several of the compounds making up this series, chronic toxicity information on only two, Aroclors 1242 and 1254. Although the experiments conducted on these two compounds relate to the effects of Aroclor vapors if inhaled, it is our opinion that the systemic injury exhibited by the animals at higher dosage levels represents the type of injury which would result from chronic ingestion of effective doses. If you will write me directly as to your specific interest md indicate the exact Aroclors, perhaps we can provide additional information. Very truly yours. Elmer P. Wheeler Assistant Director Medical Department EPW:sg Enc. (1) cc: Mr. D. J. Dunne Monsanto Chemical Company Chicago, Illinois . . (1) The Toxicity of the Vapors of Aroclor 1242 and Aroclor 1254 by J. F. Treon. DSW 312409 STLCOPCB4072395