Memorandum to Mr. Roeder [A. Roeder], September 25, 1925

U.S.R.C. INTERIOR MEMORANDUM Date Sept 25, 1925 Subject For Attention of Mr. Roeder. kins Answering Memo. of SEP it Dear Mr. Roeder: - As a result of a conference or two with Dr. Flinn recently we have outlined a few experiments that may be of interest. 1. We have pretty well decided upon a method pf proceedure for testing the exhaled breath of individuals. This is an experiment I have had in mind since my conference with Doctors McCoy and Schlundt, and I am glad to have the cooper ation of Dr. Flinn as he has at his disposal part of the necessary equipment. It seems to me that this would be a very valuable test to run on the plant employees, especially those in the crystallbzing and application departments, at definite intervals. The information might prove exceedingly valuable as to determining certain factors hithertoo unknown. 2. We have discussed the matter of examining individuals for radioactivity. Some of Dr. Flinn's collegues proposed the examination of some of the girls who have been engaged in luminous work for a long period of time. At the best the test will re- solve itself into a very delicate one, however, I am inclined to believe that where an apprecialbe quantity (such as in Leman's case) of radioautive material is present in the system it can be detected. I had discussed this point with Dr. Reitter and he suggested an examination of V ctor. While such a test might not show anything still it appears to me that it would be worth trying on some of our employees. 3. Dr. Flinn is looking up the work that has been done relative to the time which radioac ive materials that have been injected intravenously remain in the system. We both feel that a little first hand information on this point should prove very valuable in case of court proceedings. 4. This is perhaps a little beside my subject, but I am quite unable to reconcile myself to the fact that such positive tests for radioactive materials were found in the Mallifer case. The findings in the Leman case is not the leat bit surprising to me but when the conditions under which the two worked are compared, Leman should have had manifold the quantity as Mallifer, which apparently is not the case. In view of these circumstances and the nature of the trouble with which Mrs. Mallifer was afflicted I am wondering if it is not quite probable that she may have been given intraveous injections by her physician. Very truly yours, H. H. Barker.