CHAPTER XXI.
_Wolves attack the horses, and Cameron circumvents the wolves_--_A bear-hunt, in which Henri shines conspicuous_--_Joe and the "Natter-list_"-- _An alarm_--_A surprise and a capture_.
We must now return to the camp where Walter Cameron still guarded the goods, and the men pursued their trapping avocations.
Here seven of the horses had been killed in one night by wolves while grazing in a plain close to the camp, and on the night following a horse that had strayed was also torn to pieces and devoured.

The prompt and daring manner in which this had been done convinced the trader that white wolves had unfortunately scented them out, and he set several traps in the hope of capturing them.
White wolves are quite distinct from the ordinary wolves that prowl through woods and plains in large packs.

They are much larger, weighing sometimes as much as a hundred and thirty pounds; but they are comparatively scarce, and move about alone, or in small bands of three or four.

Their strength is enormous, and they are so fierce that they do not hesitate, upon occasions, to attack man himself.

Their method of killing horses is very deliberate.