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UNIVERSITY OF MISSOURI COLUMBIA DEPARTMENT OF CHEMISTRY NAV 0 1929 May 6, 1929 Mr. H. H. Barker United States Radium Corporation 535 Pearl St. New York, N. Y. My dear Howard: Please be advised that we are making daily progres on the determination of radium in the samples of excreta which we collected in March. I can do only about one to two samoles a day. At the present time I am using bi-sulfate fusion method. Since the quantityyof radium present is rather small, I am allowing at least two weeks to elapse for the accumulation of radon. This day I have had a note from Mr. Markley saying that adjustments are drawing near whereby I shall be reimbursed for out-of-pocket money for travelling expenses. With very kind regards, I remain Very truly yours, Herman Sehlundt Herman Schlundt HS : RO