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OCR Page 1 of 2UNIVERSITY OF MISSOURI
COLUMBIA
DEPARTMENT OF CHEMISTRY
March 25th, 1931.
Mr. H. H. Barker
United States Radium Corporation
MAR 27 1931
535 Pearl Street
New York City, New York
My dear Barker:
Enclosed herewith is a report of the
radium determinations by the emanation method which
I am today sending to Dr. Craver. I have avoided
lengthy comments, nor have I given any detail as to
the methods used in making the radium determinations.
Previous to making these determinations
by the emanation method I had made some alpha ray com-
parisons by the film method. From these measurements
which are, of course, very rough, I felt sure that the
results by the emanation method would show no unusual
elimination of radium; and on the basis of these alpha
ray comparisons I made up all the samples in advance
of the final determination.
With very kindest regards, I remain,
Sincerely yours,
Herman Schlendt
Herman Schlundt.
hs.as
enc.
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