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OCR Page 1 of 2UNIVERSITY OF MISSOURI
COLUMBIA
MAY I 1 1931
DEPARTMENT OF CHEMISTRY
May 7th, 1931.
Mr. H. H. Barker
United States Radium Corporation
535 Pearl Street
New York City, New York
My dear Barker:
I am interested indeed in the experiments
conducted at the Elgin State Hospital through the inter-
est of Dr. John and Mr. Armstrong in the administering
of radium chloride internally and I am very much obliged
to you for bringing to our attention the work of Le Blanc.
I shall bring these two papers to the attention of Mr.
Thomas; he probably has not seen these publications but
he is very alert and is watching the current literature.
With regard to the electroscopic tests of
patients who are in the Elgin State Hospital, let me say
right here that I must beg your pardon for not having re-
plied to this part of your letter, in fact, I had for -
gotten all about it. It was evidently displaced by the
attention I had to give to other matters and it had
slipped my mind entirely. It seems to me that the making
of routine gamma ray tests on living persons could easily
be entrusted to someone who has not had very much train-
ing in radicactivity as long as he has available one of
these Wulf-Hess instruments. The only danger I see is
that such a person might not be very careful in prevent-
ing contamination of the instrument, not on the inside,
of course, but on the outside, by carelessly, through lack
of knowledge, spilling some of the radium solution which
is being used for the patients, on the instrument; or by
getting his hands in the solution and then charging the
electroscope. A little caution on this point ought to
protect the instrument fully. It seems to me that the
value of these measurements would lie in the regularity
with which they were made.
We are now extending our tests for radioac-
tivity to a number of persons who have been employed in
the building where we have the refining laboratory, to see
to what extent they have become radioactive.
Sincerely yours,
Herman Schlundt
Herman Schlundt.
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