SOUTH NASSAU COMMUNITIES HOSPITAL 2445 OCEANSIDE ROAD OCEANSIDE, NEW YORE 401066 Oct. 4,1962 Mr. Will Siri Donner Laboratories University of California Berkely, 4, Califomia. Dear Will: In reviewing the blood volume data on the Marshallese and Caucasians which we performed in 1961 and 1962, I find that there may be many errors since we based our normal values om ideal weight. As you have pointed out in the past these results are f. probably not valid as some subjects are either under- or overweight. We should therefore like to include total body water along with blood volume determinations:which we plan to repeat in the 1963 survey. Could you supply us with tritiated water so that we can accomplish this test? As F recall, you madé this offer back in 1961 when Y visited the Donner Laboratories. IT kmow you are a very busy man particularly in view of your impending trip to Mt. Everest but maybe you can take a moment (from one of your coffee breaks) to answer. Please give my best regards to Jean and say "hello" to the Weavers and Wim Born. ZF don't think I have any other friends (7) left at Donner. If F should go through San Prancisco on Feb, 14th F shall certainly call you even if you don't supply the labelled water. Sincerely yours, IMMzat Leo MN. Meyer,M.D. Lawrence Berkeley Laboratory Arebivet and Reserds Olllee IED SCIEACE DIV. x CLEee en fos=e 9008259

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