402507 April 27, 1965 Robert A. Conard, M.D. Brookhaven National Laboratory Upton, Long Island New York Dear Bob, We have completed the assay of the six tritiated plasma samples from the South Pacific subjects which you sent reeently. The results are enclosed and contain an estimation of @ Total Body Water and % Fat which was calculated from the TBW as shown on the data sheet. I am also enclosing a graph of normal values of RBC and BV as a function of TBW. The points represent the Mar- shallese you measured last year. If you have questions or if we can be of further help, please feel free to contact us. Sincerely, William E. Siri &PP lagures Meyer WES/pb R.