Journal July 18 (Cnd.) In an environmental situation as far as temperature is concerned. The back door will be left open at all times to allow great fluctuations in temp. After the routine work, I weighed the six pregnant lemmings obtained from Mike through trade and started them on food/water data. I had checked traps that morning with Sullivan and this night too. July 19. Pt. Barrow, Alaska; Warm day but enough breeze to keep the insects down. Checked traps in the morning with Sullivan. Started skinning a lemming, couldn't get the flots off from around the jaw area; decided to soak it in white gasoline. Processed the lemmings caught in traps with Sullivan and then helped Sullivan mark the point on his device for point sampling. Started to work on the colony after lunch. I did the six lemmings in the temperature experiment first and then went to the colony. When about half the work was done, noticed a birth process going on from one of the pregnant ones brought in the village. She had already dropped two or three when I noticed her. I could observe her because she didn't have a breeding boy. She turned in a tight circle within the nest, once almost rolling over on her back. Once there was a good view of her eating the afterbirth the births were about 2-4 minutes apart. At