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350 Main Street, Ornnge, N. J.
November 11, 1925.
Dr. F. B. Flinn,
437 West 59th Street,
Columbia University,
New York City.
Dear Dr. Flinn:-
The sample of activitated zinc sulphide subnitted by you for
analysis cont ains 0.0549 milligrans of radium element or its
equivalent when mensured by its gomm radiation. This figures
the same na material which contains 2.90 no of radium element
or its equivalent per 100 grans.
Very truly yours,
H. H. Barker.
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"ocrText": "350 Main Street, Ornnge, N. J.\nNovember 11, 1925.\nDr. F. B. Flinn,\n437 West 59th Street,\nColumbia University,\nNew York City.\nDear Dr. Flinn:-\nThe sample of activitated zinc sulphide subnitted by you for\nanalysis cont ains 0.0549 milligrans of radium element or its\nequivalent when mensured by its gomm radiation. This figures\nthe same na material which contains 2.90 no of radium element\nor its equivalent per 100 grans.\nVery truly yours,\nH. H. Barker."
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