R.D.Kirkpatrick 1941 Mure musculus Sand Island, Johnston Atoll, Pacific Ocean Oct. A total of 29 mice (including 3 new 27 ones) were trapped on the grid. (cont.) RDK #2 3937 and 3940 were made into study skins. They had been caught at midnight by hand on the central part of the island. F #393 had had at least one litter but was not lactating now. She had 10 mammae (6 in the pectoral region and 4 in the inguinal region). Oct. A total of 36 mice (including 2 31 unmarked ones) were trapped on the grid. The grid was modified to : 70' 55 36 + 10' -> 37 .38 .39 .40 .41 .42 48 + 5 26 27 28 47 + 10' -> 34 33 32 1 13 5 44 43 46 45 ++ 13 14 27 30 27 29 30 31 11 13 15 45 46 43 44 21 23 28 22 23 24 W <- 90' 28 27 26 21 23 25 48 47 42 44 48 34 38 47 36 35 B Road Road 2 4 6 7 8 9 10 12 24 22 20 19 18 17 16 14