R.D. Kirkpatrick 1965 Mus musculus Sand Island, Johnston Atoll, Pacific Jan. 9 A.M. We found 38 Mus (including 3 unmarked ones) in the grid traps. 10:30 P.M. We set the grid traps. Jan. 4 10 A.M. We found 36 Mus (including one unmarked one) in the grid traps. 10 P.M. We set the grid traps. Jan. 5 9 A.M. We found 41 Mus (including 4 unmarked ones) in the grid traps. 10 P.M. We set the grid traps. Jan. 6 9:30 A.M. We found 39 Mus (including 8 unmarked ones) in the grid traps. 10 P.M. We set the Mus traps. Jan. 7 9:30 A.M. We found 40 Mus (including no unmarked ones) in the grid traps. Jan. 8 6:30 P.M. We set 25 Mus traps SE of the tower. Jan. 9 10 A.M. 15 mice were in the 25 traps. #704 was caught also #325 J. We released the 2 marked mice on the grid. The 13 mice (RDK # 504 then RDK # 516) were autopsied. Eyeballs, skulls,