Letters Sent to Dr. Herman Schlundt, December 8, 1928

copy sent to Dr. Hinn 10/19 December 8th,1928. Dr. Herman Schlundt, University of Missouri, Room 110 New Chemistry Bldg., Columbia, Mo. Dear Dr. Schlundt: The package containing the reports of the work which you did while in New York, as well as letter and expense account have been received, and I have not acknowledged them prior to this due to the fact that I have been out of town considerably of late. lie wish to assure you that we appreciate the time that you gave us to do this work, and also appreciate your contributing a part of your time for this work at no charge, as well as a reduced charge for the rest of the time. I have read the reports rather suporficially, but have not made a critical stady of them as yet. There is one thing, however, which strikes me rather forcibly, and that has to do with the method of testing the expired aira. As we have discussed, the amount of radon freely emanated is excessivly high in all of these cases, and in view of this condition, I don't feel altogether satisfied with the method of collection of air for test. It seems to me that where a subject has to force the air through the long chain prior to reaching the electroscope that the breath is very far from normal, and that the radon expired under such conditions is not necessarily a true representation of that which would be expired under more normal breath- ing conditions. It may be that we would not find any difference, but I will not feel entirely satisfied until such time as it has been established that breathing normally, that is into a Douglas Bag, and then transferring the air from the bag to the ionization chamber, gives the same result as breathing directly into the electroscope. It seems to ne as though where one respires under abnormal conditions there is a chance for a general cleansing of the circulatory system which might moan an abnormally high amount of radon was being eliminated. Pernaps the tests which you have under way at Mo. may throw light upon this subjeco. Dr. Flinn sent me a copy of a letter addressed to you under date of November 27th, reporting data on a case recently examined by him. I saw Dr. Flinn the other day, and he called my attention to the fact that he had received from you an interpretation of this data, and that you had reported approximately 4 micrograms by the gamma ray method, and .5 of a microgram by