[CHAPTER VIII.]
DOWN THE RIVER TO SELKIRK.

IN THE RINK RAPIDS.

One evening about eight o'clock, while encamped below the cascades, we could hear dull, heavy concussions occurring at intervals of two or three minutes. The sound did not at all resemble that of distant thunder, and moreover, the sky was cloudless. Earthquakes were suggested, but the theory did not seem plausible, and we were compelled to attribute it to the cascades, which, I believe, have been known to cause earth tremblings and analogous phenomena.

I noticed that a Tahk-heesh Indian in arranging his head and breast bands for a load to be carried on his back, adjusted them as follows: The breast-band was grasped in the center by the palm of the hand, and when pulled out taut if the elbow of the packer just touched the load,—box, bag or bundle,—it was considered to be in proper condition to carry. The breast band adjusted, the head band is also pulled out, and between the two there must be the width of the packer's hand; the headband, which is not always used, being the longer. I had hitherto noticed this manner of arranging the load when among my Chilkat packers; the most singular feature of it being that the breast band passes over the arms so as to pinion them to the sides, making them apparently useless when the most needed.

CLAY BLUFFS ON THE UPPER YUKON.

On the 5th of July we again got under way on our raft. For the first few miles, eight or ten, the river is very swift and occasionally breaks into light rapids, although I believe a powerful light-draft river steamer, such as are used on the shallow western rivers, could easily surmount all the bad places we saw below the cascades of the great rapids. If I am right in my conjectures upon this point, the Yukon River is navigable for 1866 miles from the Aphoon or northernmost mouth of its delta.