2.2 Time of Collections Collections were made both before and after the Mike test of November 1. The pre-test samples were collected from October 21 to 28, and the post test samples from November 3 to 10. The collecting dates and distances from Mike shot by islands were as follows: Month Japtan Igurin Rigili BogombogoBogallua Aomon Engebi Aaraan. Runit Pre Oct. el 28 27 25 24 23 22 Post Nov. 3 4 5 8 8 7 6 184 194 74-9 114 Nauticel miles from Mike shot 14 24-3 3. METHODS 3.1 Preservation of Specimens 24 All biological material, with the exception of plankton and rats, that was to be used for radioactivity analyses was placed on ice in an insulated container as it was collected. After return to the Oakhill the collections were packaged in cellophane bags, labeled, and moved to a deep freeze box for freezing and storage. During the air flight from Eniwetok to Seattle the specimens were transported in an insulated container with dry ice. The specimens arrived at the University of Washington laboratory in a frozen condition ~ 6-