RADIOBIOLOGICAL STUDIES AT THE ENIWETOK TEST SITE AND ADJACENT AREAS OF THE: WESTERN PACIFIC by Lauren R. Donaldson Laboratory of Radiation Biology University of Washington Seattle, Washington The nuclear experiments conducted at Bikini and Eniwetok Atolls in the Marshall Islands are more than experiments to measure physical forces; they are unparalleled scientific experiments involving a great number of scientific disciplines. Among the disciplines represented, biology is taking a leading role. Biologists have been a part of this scientific team activity since the inception of the atomic tests at Bikini in 1946. Studies with the radio- active materials resulting from the weapons tests and deposited in the sea and on the islands have made it possible to follow the biological cycling of these materials even where they have become diluted to infinitesimal quantities, by standards of ordinary chemical analysis. Hines (1951) has described the general problem of evaluation of this research. Much attention has been given to the more immediate effects of the weaponstested upon the fauna and flora of the atolls but such studies,