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March 19th,1929.
Dr. Herman Schlundt,
University of Missouri,
Columbia, Mo.
Dear Dr. Schlundt:
then I returned the instruments to Dr. Flinn
yesterday morning, I mentioned to him the irregularity which
you noted in your gamia ray roadings at Newark on Sunday, ask-
ing if he had hed a similar experience. He stated that he had,
and at the time Dr. Ives of the U. S. Dept. of Public Health,
was present at the examinations at Waterbury, they experienced
similar results. Dr. Ives later advised Dr. Flinn that he had
discuased this matter with Dr. 0. H. Gish, whom, as you will
recall is associated with the measurement of extremely minute
ionization currents, and Dr. Gish advised that they had had
similar experiences in their work, attributing the discrepancy
to the screening of external radiation from cosmic sources.
This would seam to be a satisfactory explana-
tion, for after all the Wulf-Hess instrument is very sensitive
and it is quite probable that it could be used for messuring
such sources of radiation.
Dr. Flinn conducts all of his experiments at
the College of Physicians & Surgeons, in a room with no
external outlets other than the one for entrance, and he states
that in that room he never has this difficulty, which of course
should be the case in the event that the trouble can be ascribed
to cosmic rays, or sources of external radiation emitting from
other than radio-active sources.
lie trust that your return trip to Missouri
was completed without mishap.
Very truly yours,
Vice President.
HHBarker#RH
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"ocrText": "March 19th,1929.\nDr. Herman Schlundt,\nUniversity of Missouri,\nColumbia, Mo.\nDear Dr. Schlundt:\nthen I returned the instruments to Dr. Flinn\nyesterday morning, I mentioned to him the irregularity which\nyou noted in your gamia ray roadings at Newark on Sunday, ask-\ning if he had hed a similar experience. He stated that he had,\nand at the time Dr. Ives of the U. S. Dept. of Public Health,\nwas present at the examinations at Waterbury, they experienced\nsimilar results. Dr. Ives later advised Dr. Flinn that he had\ndiscuased this matter with Dr. 0. H. Gish, whom, as you will\nrecall is associated with the measurement of extremely minute\nionization currents, and Dr. Gish advised that they had had\nsimilar experiences in their work, attributing the discrepancy\nto the screening of external radiation from cosmic sources.\nThis would seam to be a satisfactory explana-\ntion, for after all the Wulf-Hess instrument is very sensitive\nand it is quite probable that it could be used for messuring\nsuch sources of radiation.\nDr. Flinn conducts all of his experiments at\nthe College of Physicians & Surgeons, in a room with no\nexternal outlets other than the one for entrance, and he states\nthat in that room he never has this difficulty, which of course\nshould be the case in the event that the trouble can be ascribed\nto cosmic rays, or sources of external radiation emitting from\nother than radio-active sources.\nlie trust that your return trip to Missouri\nwas completed without mishap.\nVery truly yours,\nVice President.\nHHBarker#RH"
}