In 1876, near the 83d degree of north latitude, Colonel Feilden shot a fox who, with his mate, occupied a lair in a hillock of broken rocks. "While resting," says Feilden, "we noticed that numerous dead lemmings were scattered around. In every case they had been killed in the same manner--the sharp canine teeth of the foxes had penetrated the brain. Presently we came upon two ermines killed in the same manner. Then, to our surprise, we discovered numerous deposits of dead lemmings; in one hidden nook under a rock we pulled out a heap of over fifty. We disturbed numerous _caches_ of twenty and thirty, and the ground was honeycombed with holes, each of which contained several bodies of these little animals, a small quantity of earth being placed over them. In one hole we found the greater part of a hare hidden away. The wings of young brent-geese were also lying about, and as these birds were at that date only just hatching, it showed that they must have been the results of successful forays of prior seasons, and that consequently the foxes occupy the same abode from year to year." It appears evident that the hoarding of supplies is peculiar to the fox of North Grinnell Land, for two we held in captivity regularly hid such portion of their food as was not needed for immediate consumption, and it was also noted that the fox was an unusually frugal eater. Curiously enough, our captive foxes would not hide anything while being watched, and a piece of meat has been allowed to lie on the snow undisturbed for half an hour or more while persons were around; but leaving the fox for only four or five minutes, it would be found, upon returning, that the piece of meat had been carried to a corner, a hole dug in the snow, and the surface so carefully restored that it was difficult to notice any change. One of the foxes, under gentle treatment, became quite tame, and permitted us to handle him, although he always caught the advancing hand and gently applied his teeth, as if to give warning that he was not to be trifled with. When stroked he seemed pleased, and gave forth a purring noise very like that uttered by a contented cat. He would not tolerate the bringing of the face near to, nor blowing at him, invariably jumping at the person so offending.