All night he had been on guard, and he was cautious now.
For a particular hurt Thor knew of no particular remedy. He was not a botanist in the finer sense of the word, but in creating him the Spirit of the Wild had ordained that he should be his own physician. As a cat seeks catnip, so Thor sought certain things when he was not feeling well. All bitterness is not quinine, but certainly bitter things were Thor's remedies, and as he made his way up the gorge his nose hung close to the ground, and he sniffed in the low copses and thick bush-tangles he passed.
He came to a small green spot covered with kinnikinic, a ground plant two inches high which bore red berries as big as a small pea. They were not red now, but green; bitter as gall, and contained an astringent tonic called uvaursi. Thor ate them.
After that he found soap berries growing on bushes that looked very much like currant bushes. The fruit was already larger than currants, and turning pink. Indians ate these berries when they had fever, and Thor gathered half a pint before he went on. They, too, were bitter.
He nosed the trees, and found at last what he wanted. It was a jackpine, and at several places within his reach the fresh pitch was oozing. A bear seldom passes a bleeding jackpine. It is his chief tonic, and Thor licked the fresh pitch with his tongue. In this way he absorbed not only turpentine, but also, in a roundabout sort of way, a whole pharmacopoeia of medicines made from this particular element.
By the time he arrived at the end of the gorge Thor's stomach was a fairly well-stocked drug emporium. Among other things he had eaten perhaps half a quart of spruce and balsam needles. When a dog is sick he eats grass; when a bear is sick he eats pine or balsam needles if he can get them. Also he pads his stomach and intestines with them in the last hour before denning himself away for the winter.
The sun was not yet up when Thor came to the end of the gorge, and stood for a few moments at the mouth of a low cave that reached back into the wall of the mountain. How far his memory went back it would be impossible to say; but in the whole world, as he knew it, this cave was home. It was not more than four feet high, and twice as wide, but it was many times as deep and was carpeted with a soft white floor of sand. In some past age a little stream had trickled out of this cavern, and the far end of it made a comfortable bedroom for a sleeping bear when the temperature was fifty degrees below zero.
Ten years before Thor's mother had gone in there to sleep through the winter, and when she waddled out to get her first glimpse of spring three little cubs waddled with her. Thor was one of them. He was still half blind, for it is five weeks after a grizzly cub is born before he can see; and there was not much hair on his body, for a grizzly cub is born as naked as a human baby. His eyes open and his hair begins to grow at just about the same time. Since then Thor had denned eight times in that cavern home.