Cable 1957 Lemmus tunicatus 12 June account for part of the present abundance of these animals on high ground and the cause with which the kids are able to catch them. Later some lemmings should move back into the troughs and marshes. At Barrow Lemmings seem to do the same kind of movement to high ground out of the marshes, but there it must be on a larger scale because the marshes are more extensive, the high ground more restricted than at Wainwright. The ratio of high ground to spring inundated ground must be an important 'limiting' factor on the maximum spring numbers of a lemming population. Where there is little high ground, there is less food accessible; a larger number of animals is exposed per unit area to predation by owl and weasel. 15 June, Barrow, Alaska In a 1 1/4 hours walk around the car circle S. of ARL, I saw one lemming, which ran into a deep burrow and could not be unearthed. This animal was seen on the high center polygon-peat blister area - at its S. edge adjacent to a ridge- groves marsh. One - possibly two - recent winter