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1925, S.O. Lind of the Fixed Nitrogen Researoh Laboratory brought out the faot
that the activity of one alpha particle in the production of physical and chem
ical changes is 10 to 15 fold that which has been ordinarily ascribed to it. This
may have some bearing in a study of this subjecto
In the case we have mentioned in which .015 mg of radium was found in
the bone and which has received considerable public attention in some quarters,
the man had not been doing any work with high-grade materials for over a year;
that is to say he had done no orystallizing of high grade products and was not
thus exposed directly to radium emanations. It is true that he had made some
measurements on high grade materials but he did no crystallizing It seems that
his break down if attributable at all to radiation from radium, is the result of
accunulations in his system of rad io-active products. In the radium series, the
products following rad ium 0 are some of the long-lived and they gradual ly produce
produots giving off alpha rays. Sime some time elapsed between his breakdown
and the years during which, he was exposed to radium amanation, there is a possi-
bility that come of these disintegration products resulting from emanabion may
have remained in nis systeme In the thorium series, on the other hand, the
products which follow emanation are all comparatively short-lived, and, hence
if these disintegration products from emanations have at all attributed to the
illness, it would seem that the radium produots are the ones responaible. This
case is complicated by the fact that he suffered from severe henorrhoids and
they interfered toward the end with his social activities at times. At the
time Tre Drinker made the examination of the Orange Plant the blood pioture of
the man was practionlly normal.
Te wanted to determine how small a quentity of radium would fog an zeray
film in a given time. We took 100 grams of bone ash and mixed it thoroughly
with 0.200 grame of luminous paint containing 0.00598 mgs of radio-active
material. We exposed dental films to one gram half, quarter, and tenth grams
of this mixture. At the end of two weeks the tenth gram portion showed a slight
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"ocrText": "-21-\n1925, S.O. Lind of the Fixed Nitrogen Researoh Laboratory brought out the faot\nthat the activity of one alpha particle in the production of physical and chem\nical changes is 10 to 15 fold that which has been ordinarily ascribed to it. This\nmay have some bearing in a study of this subjecto\nIn the case we have mentioned in which .015 mg of radium was found in\nthe bone and which has received considerable public attention in some quarters,\nthe man had not been doing any work with high-grade materials for over a year;\nthat is to say he had done no orystallizing of high grade products and was not\nthus exposed directly to radium emanations. It is true that he had made some\nmeasurements on high grade materials but he did no crystallizing It seems that\nhis break down if attributable at all to radiation from radium, is the result of\naccunulations in his system of rad io-active products. In the radium series, the\nproducts following rad ium 0 are some of the long-lived and they gradual ly produce\nproduots giving off alpha rays. Sime some time elapsed between his breakdown\nand the years during which, he was exposed to radium amanation, there is a possi-\nbility that come of these disintegration products resulting from emanabion may\nhave remained in nis systeme In the thorium series, on the other hand, the\nproducts which follow emanation are all comparatively short-lived, and, hence\nif these disintegration products from emanations have at all attributed to the\nillness, it would seem that the radium produots are the ones responaible. This\ncase is complicated by the fact that he suffered from severe henorrhoids and\nthey interfered toward the end with his social activities at times. At the\ntime Tre Drinker made the examination of the Orange Plant the blood pioture of\nthe man was practionlly normal.\nTe wanted to determine how small a quentity of radium would fog an zeray\nfilm in a given time. We took 100 grams of bone ash and mixed it thoroughly\nwith 0.200 grame of luminous paint containing 0.00598 mgs of radio-active\nmaterial. We exposed dental films to one gram half, quarter, and tenth grams\nof this mixture. At the end of two weeks the tenth gram portion showed a slight"
}