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pig was watched to be sure that it did not spit out any of the material. This
was kept up until each pig had ingested two grams of the paint. Ten days after
the last doee the pigs were killed with ether and dissected. None of the organs
showed any signs of the treatment. At the beginning of the experiment the pigs
were quiet, but after several days became active and ate very freely. The
feces and urine were collected and tested for radio-activity. The organs were
examined separately, but this does not moan so much for we did not drain the
body of its blood before dissection.
In determining the radio activity a specially constructed type of Alpha
ray electroscope was used. First the natural drift, that is the time required
for the quartz fibre to pass over a definite number of divisions in the eye piece
was determined with the physical conditions in the instrument the same as when
the sample was to be read. The sample was then introduced and the time required
for the quartz fibre to pass over the same divisions as used in the natural drift
determined. It is obvious that any change in the rate of movement of the fibre
must be ascribed to a change brought about by the ionization. of the air within
the chamber due to the presence of radio-active substances.
We are giving our average determination on the three pigs in the
following table
Organ
Dry Weight
Mioro gram radium element per gram of
material
Heart
3.4189 grams
5 X 10 - 4
Lungs
3.4618
4.6 x 10 - 4
Brains
3.3708
2 x 10 - 4
Spleen
2.9406
2.5 X 10 - 4
Liver
12.1291
2.5 x 10 - 3
Kidney
4.035
1.6 x 10 - 3
Muscle after burn- 10.50
1.6 K 10 - 3
ing
Bones after buming12.30
.02 micro grams.
The feces for the first 10 days contained 1.55 micro grams per gram burnt
material.
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"ocrText": "-8-\npig was watched to be sure that it did not spit out any of the material. This\nwas kept up until each pig had ingested two grams of the paint. Ten days after\nthe last doee the pigs were killed with ether and dissected. None of the organs\nshowed any signs of the treatment. At the beginning of the experiment the pigs\nwere quiet, but after several days became active and ate very freely. The\nfeces and urine were collected and tested for radio-activity. The organs were\nexamined separately, but this does not moan so much for we did not drain the\nbody of its blood before dissection.\nIn determining the radio activity a specially constructed type of Alpha\nray electroscope was used. First the natural drift, that is the time required\nfor the quartz fibre to pass over a definite number of divisions in the eye piece\nwas determined with the physical conditions in the instrument the same as when\nthe sample was to be read. The sample was then introduced and the time required\nfor the quartz fibre to pass over the same divisions as used in the natural drift\ndetermined. It is obvious that any change in the rate of movement of the fibre\nmust be ascribed to a change brought about by the ionization. of the air within\nthe chamber due to the presence of radio-active substances.\nWe are giving our average determination on the three pigs in the\nfollowing table\nOrgan\nDry Weight\nMioro gram radium element per gram of\nmaterial\nHeart\n3.4189 grams\n5 X 10 - 4\nLungs\n3.4618\n4.6 x 10 - 4\nBrains\n3.3708\n2 x 10 - 4\nSpleen\n2.9406\n2.5 X 10 - 4\nLiver\n12.1291\n2.5 x 10 - 3\nKidney\n4.035\n1.6 x 10 - 3\nMuscle after burn- 10.50\n1.6 K 10 - 3\ning\nBones after buming12.30\n.02 micro grams.\nThe feces for the first 10 days contained 1.55 micro grams per gram burnt\nmaterial."
}