Journal July 26, St. Barrow, Alaska; Checked the colony for water bottle failures and the temperature range. When Dave arrived, started to work out the experiments for the colony in a more formal way. We figured how many dbreeding cages we had and how many with litters would need one. Then the remaining cages (2) [illegible] are to be filled with a male each, acting as studs. Acceptable females will be placed in the cage with a male for five days and then put in a deep cage with a breeding cage. This will give a known uterine scar count. Four other females with litters who are probably pregnant already will have a male in with them all the time to see how many litters they can possibly have. Worked in colony all day with Dave. Very windy day but clear. July 27, St. Barrow, Alaska; Started in colony with Dave to finish up all the work started the day before. All the experiments discussed on July 26 were started. Have a good organization. Dave plans to take blood from several of the colony members if he cannot get adequate blood in the field. It started to rain last night early in the morning. Today it is very windy. (a micromet permit said he recorded a gust of wind up to 31 MPH; this is not the highest, 5 am one.) There is constant drizzling. After dinner I went with John Sullivan to collect traps from XIII 4 XIV. Mornin, just the wind at this time. Many of