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    "localId": "75720556",
    "label": "Report to [A. Roeder], January 28, 1926",
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{
    "id": "75720556",
    "sourceUrl": "https://catalog.archives.gov/id/75720556",
    "contentType": "document",
    "title": "Report to [A. Roeder], January 28, 1926",
    "citationUrl": "https://catalog.archives.gov/id/75720556",
    "collections": [
        "Safety Light Collection",
        "Records Related to Radium Dial Painters"
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{
    "seq": 22,
    "pageIndex": 0,
    "type": "photo",
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    "ocrText": "I8.\nClark and hia associates in discussiag tubes for insertion imto maligmant growths are\nemphatic in their statenents as to thet effect of bata rays when glass tubes are used.\nI glass walls of the tubes are not thick grough to filter out sufficient of the bota\nrays, hence there ia frequently as intense sloughing, great pain and heavy fribposis,\nleading is\nwhich onta off all circulation to the parts DE to oftem result in further mecrosis.\nThe prolonged action of the emanations in buriede tubes appear to have a particularly\ndevitalizing effect on bones. With the metal meedles the irritating beta rays are fil-\ntered out and bone necrosia has been observed to be much less frequent with metal\n*codles.\nUmfortunately almost all of the made n. to the efect of rad ium\nand its allied substances are concerned with relatively large amount of material, and\nmay of them on extermal exposures. Even the experiments in which Mella speaka of mimute\ndoses he refers to .05 mg for a rabbit weighing approximately 1000 grama which mesna in\nproportion .35 mg for the 70 kilo man.\nthe\nOutside of the cases in Orange Pant we do not have any avidence that would ix-\ndicate what a daily exposure to infinteaimal amounts of radio notiva material will db\nto the organium. Futhhermore these cases are by no mesas cleax eut and one should be ver\ncareful\nin\nstating\nthat\nthey\nare\nthe\nresult\nof\nany\nradium\nthorium\nexposure.\nOthor\nfactor\nhave not been ruled out and bacteria infection has not been disposed of in a antiafacto\ntory mamner. Long continued and carefully controlled experiments will be the oxly way\nthat thia important question cax be settled.\nThe theory that the pathological comdition ia the result of the presence of meso-\nthorium instead of radium iw not upheld by our examination of the girls. Mella hma ix-\ndicated in his work that thorium X does react on different tissues than radium, but his\nia the only observations that we have had and his results lack umiformity. His summery\nis that meither im the acute or chromic poisoming of the animal by thorium X can its\norgans.\ndeath be traced to changes in the blood forming animala; That there ia a directly op-"
}