The area near the western border of Keewatin, lying at some distance south of Dubawnt Lake and west of the upper Kazan River, does not appear to attract large numbers of Caribou. Just once, in May, Charles Schweder has found them crossing a lake which he considered Dubawnt, but may have been Kamiluk. In his trapping excursions in that area he has found trails and other signs all along the way, indicating that the animals at least pass through on their migrations. _Summer interlude_ After July 1 no more Caribou were seen about the Windy River for five weeks. From information supplied by Charles Schweder, it appears that virtually all of the animals desert the southern portion of the Barren Grounds at this season. Before dropping their fawns, the does pass on for an undetermined distance to the northward of that portion of the upper Kazan River lying immediately below Ennadai Lake. The rear guard of the northward migration seems to be composed mainly of bucks and a few barren does. A general veil of mystery seems so far to have enshrouded most of the natal places (except the islands along the Arctic mainland coast) and the first few weeks in the life of the Caribou fawns. _Fall migration in the Nueltin Lake region_ In former times the southward migration reached the Nueltin Lake region in July (_cf._ Downes, 1943: 203-237), sometimes as early as the middle of the month. Suddenly the time of arrival shifted to (early) August, and has so remained. In Charles Schweder’s experience, the bucks nearly every year precede the does on the southward migration; this suggests that at least the majority of the bucks may not go so far north as the does. In a certain year the does actually appeared first in coming south. In normal years, according to Fred Schweder, Jr., the migration continues till October or November, by which time the animals have passed into the wooded country for the winter. Charles Schweder described the general pattern of fall migration as follows. At first two or three animals will appear, then a few more, and after several days a big movement, lasting three or four days, will pass through. Thereafter the numbers dwindle, though the migration continues. Curiously enough, there is a definite retrograde movement northward into the Barrens in September--sometimes as early as the first part of the month. Then there is a final movement toward the south in November, at the time of the first good snows; the largest herds of the year may then be seen. Just how far the migration in 1947 conformed to this pattern (outlined in early August) will be seen in the following pages.