-13- in Rongelap goatfish sition elements and will be studied with respect to tran-~ related radionuclides. Chemical and radiochemical analyses of samples of a 24-hour ration of the Rongelapese will also be investigated. Analytical method development, cation sium, will include a rapid modification and verifi- turbidimetric method for potas- selective precipitation of rapid processing methods for sodium from sea water, water samples and further verifi- cation of ion-exchange and colorimetric tests for transition elements. F. X-radiation Supervisor: Studies K. Bonham Penetrating radiation from an external source continues to be one of our best research tools. The facilities at the Laboratory of Radiation Biology are used by staff members and graduate students in the Laboratory to further their research. The Laboratory has provided X-ray facilities to other re~- search workers as follows. During the fiscal year July 1, 1959 through June 30, the Picker Deep Therapy X-ray machine 1960, was used by departments (other than the Laboratory of Radiation Biology) as listed in the table.

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