A LIVE BEAVER.--The Indians brought into camp one morning, while I was at Rice Lake, a young beaver; an animal more completely amphibious, it would be difficult to find. The head and front part of the body resemble the muskrat. The fore legs are short, and have five toes. The hind legs are long, stout, and web-footed. The spine projects back in a thick mass, and terminates in a spatula-shaped tail, naked and scale-form. The animal is young, and was taken about ten days ago. Previously to being brought in, it had been taken out in a canoe into the lake, and immersed. It appeared to be cold, and shivered slightly. Its hair was saturated with water, and it made use of its fore paws in attempts to express the water, sometimes like a cat, and at others, like a squirrel. It sat up, like the latter, on its hind legs, and ate bread in the manner of a squirrel. In this position it gave some idea of the kangaroo. Its color was a black body, brownish on the cheeks and under the body. The eye small and not very brilliant. Its cry is not unlike that of a young child. The owner said, it would eat rice and fish. It was perfectly tamed in this short time, and would run to its owner.

NOTICES OF NATURAL HISTORY.--I took out of the bed of the river, in the descent below Red Cedar Lake, a greenish substance attached to stone, having an animal organization resembling the sponge. In our descent, the men caught, and killed with their poles, a proteus. The wild rice, which fills this part of the river, is monoecious. The river abounds in muscles, among which the species of unios is common, but not of large size, so far as we observed. The forest growth improves about this point, and denotes a better soil and climate. Pine species are still present, but have become more mixed with hard wood, and what the French canoe-men denominate "Bois Franc."

VALUE OF THE FOLLEAVOINE FORK.--The name by which this tributary of the Chippewa is called, on the Lake Superior side, namely, Red Cedar, is quite inappropriate. Above Rice Lake it is characterized by the wild rice plant, and the name of Folleavoine, which we found in use on the Mississippi border, better expresses its character. The lower part of the stream appears to be not only more plenteous in the class of resources on which an Indian population rely, but far better adapted to the purposes of agriculture, grazing, and hydraulics.

MEDAL OF THE THIRD PRESIDENT.--During the assemblages at Rice Lake, I observed a lad called Ogeima Geezhick, or Chief Day, having a Jefferson medal around his neck. I called him and his father, and, while inquiring its history, put a new ribbon to it. It was probably given by the late Col. Bolvin, Indian agent at Prairie du Chien, to the chief called Peesh-a-Peevely, of Ottawa Lake. The latter died at his village, an old man, last winter. He gave it to a young man who was killed by the Sioux. His brother having a boy named after him, namely, Ogeima Geezhick, gave it to him.

WAR-DANCE.--This ceremony, together with what is called striking the post, was performed during our stay. The warriors, arrayed for war, danced in a circle to the music of their drum and rattles. After making a fixed number of revolutions, they stopped simultaneously and uttered the sharp war yell. A man then stepped out, and, raising his club and striking a pole in the centre, related a personal exploit in war. The dance was then resumed, and terminated in like manner by yells, when another warrior related his exploits. This was repeated as long as there were exploits to tell. One of the warriors had seven feathers in his head, denoting that he had marched seven times against the enemy. Another had two. One of the young men asked for Lieut. Clary's sword, and danced with it in the circle.

An old woman, sitting in a ring of women on the left, when the dancing and drumming had reached its height, could not restrain her feelings. She rose up, and, seizing a war-club which one of the young men gallantly offered, joined the dance. As soon as they paused, and gave the war-whoop, she stepped forward and shook her club towards the Sioux lines, and related that a war party of Chippewas had gone to the Warwater River, and killed a Sioux, and when they returned they threw the scalp at her feet. A very old, deaf, and gray-headed man, tottering with age, also stepped out to tell the exploits of his youth, on the war path.

Among the dancers, I noticed a man with a British medal. It was the medal of the late Chief Peesh-a-Peevely, and had probably been given him while the British held the supremacy in the country. I explained to him that it, was a symbol of nationality, which it was now improper to display as such. That I would recognize the personal authority of it, by exchanging for it an American silver medal of equal size.

ORNITHOLOGY.--While at Rice Lake, I heard, for the first time, the meadow-lark, and should judge it a favorite place for birds obtaining their food. The thirteen striped squirrel is also common. A quantity of the fresh-water shells of the lake were, at my request, brought in by the Indian girls. There was very little variety. Most of them were unios of a small size.

I found the entire population to be one hundred and forty-two souls, of whom eleven were absent.

One of the last acts of Neenaba was to present a pipe and speech, to be forwarded to the President, to request him to use his power to prevent the Sioux from crossing the lines. Having now finished repairing my canoes, I embarked on the ninth, at three o'clock in the afternoon, and went down the river four hours and a half, probably about eighteen miles, and encamped. Encountered four Indians, from whom we obtained some pieces of venison. During the night wolves set up their howls near our camp, a sure sign that we were in a deer country.