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Reos
Noy 13
Report of the Examination of the Carcuss of
Animals Treated with Activated
Zine Sulphide.
There were seven specimens submitted, two of which were blanks,
designated as 1 and 2, that is, they represented animals which
had not been treated with the active zine sulphide. The tests
were nade by alpha ray comparison, using the utmost of caution
to minimize any possible errors. The test 18 considered very
sensitive for the detection of radio-active material.
The following table gives the observations as nade in detail.
Material
Scale div. read.
Time.
1
2
average.
Blank 1
60-50
197
sec
197
sec
197 sec
A
60-50
194
11
188
"
191 n
B
60-50
195
"
200
n
197.5 sec
Blank 2
60-50
199
"
195
"
193 sec
C
60-50
194
"
195
"
194.5 sec
D
60-50
194
"
196
11
195 see
B
60-50
198
B
198
11
198 n
Blank 1
60-50
198
11
197
"
197.5 sec
A
60-50
191
"
192
"
191.5 "
From an analysis of the data I think we may definitely say that
samples B and E show nothing. In the case of sample C and D
there may be a slight indication of the presence of radio-active
material, although the difference in time required for a definite
drop in potential is so small, that it may be attributed to
experimental error. In the case of sample A, which was observed
at two different times, there is apparently 8 small amount of
radio-active material present.
H. H. Barker.
Novemmber 12, 1925.
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"ocrText": "Reos\nNoy 13\nReport of the Examination of the Carcuss of\nAnimals Treated with Activated\nZine Sulphide.\nThere were seven specimens submitted, two of which were blanks,\ndesignated as 1 and 2, that is, they represented animals which\nhad not been treated with the active zine sulphide. The tests\nwere nade by alpha ray comparison, using the utmost of caution\nto minimize any possible errors. The test 18 considered very\nsensitive for the detection of radio-active material.\nThe following table gives the observations as nade in detail.\nMaterial\nScale div. read.\nTime.\n1\n2\naverage.\nBlank 1\n60-50\n197\nsec\n197\nsec\n197 sec\nA\n60-50\n194\n11\n188\n\"\n191 n\nB\n60-50\n195\n\"\n200\nn\n197.5 sec\nBlank 2\n60-50\n199\n\"\n195\n\"\n193 sec\nC\n60-50\n194\n\"\n195\n\"\n194.5 sec\nD\n60-50\n194\n\"\n196\n11\n195 see\nB\n60-50\n198\nB\n198\n11\n198 n\nBlank 1\n60-50\n198\n11\n197\n\"\n197.5 sec\nA\n60-50\n191\n\"\n192\n\"\n191.5 \"\nFrom an analysis of the data I think we may definitely say that\nsamples B and E show nothing. In the case of sample C and D\nthere may be a slight indication of the presence of radio-active\nmaterial, although the difference in time required for a definite\ndrop in potential is so small, that it may be attributed to\nexperimental error. In the case of sample A, which was observed\nat two different times, there is apparently 8 small amount of\nradio-active material present.\nH. H. Barker.\nNovemmber 12, 1925."
}