shells, mica from the primitive regions, native copper from the shores of lake Superior, galena from the upper Mississippi, cetacean teeth, pearls and instruments of obsidian, show the extent of communication and intercourse had by the authors of these ancient works. Sculptures of animals, birds and reptiles have been found in great numbers and variety, exhibiting a skill which few could now surpass. Also, sculptures of the human head, disclosing most probably the character of the physiognomy, as well as the manner of adjusting the hair, the head dress and ornaments of the mound-builders. Careful admeasurements of the earth works which abound in the Ohio valley, have been made by the gentlemen alluded to, in which the interesting fact has been developed, that many of them are perfect circles and squares, and hence that the people by whom they were constructed had some means of determining angles and of constructing circles. In some of those earth-heaps, sufficient remains to show that when in a perfect state, they resembled the teocallis or terraced edifices of Mexico and Yucatan, though they were composed wholly of wood and earth.

The number of works manifestly connected in some way with their religion, guide us to some estimate of the prominence which their superstitions occupied, and that a religious system existed among them, in some degree resembling that of the ancient Mexicans. The immense tumuli heaped over the remains of the dead, show the regard which they attached to their chiefs, and the veneration in which they held their memory. The number and extent of their remains of all kinds, which occupy the fertile valleys, and which are confined almost entirely to them, indicate that an immense population once existed there, that it was stationary and therefore agricultural;[1] and if agricultural and stationary, that a different organization of society, different manners and customs, different impulses and feelings existed among them, than are to be found among the hunter and nomadic tribes, discovered by Europeans in possession of the country.

Another class of antiquities has been discovered by these gentlemen, of which we only have the particulars in a letter. These consist of rocks sculptured with figures of men, of birds and animals. They are cut in outline, the lines being from one half to three quarters of an inch deep by about the same width. Only those on the sides of the rocks are visible. Those on the upper or horizontal faces are nearly obliterated. One represents an elk and is said to be very spirited.

What may result from the future researches of Dr. Davis and Mr. Squier, remains to be seen; but sufficient has been developed to show that a people, radically different from the existing race of Indians, once occupied the valley of the Mississippi, and built the singular monuments in which it abounds. These also show that they were to a certain extent advanced in the arts and civilization. In short that they closely resembled in the character of their structures, ornaments and implements of war and husbandry, the races of Central America; if they were not indeed their progenitors or an offshoot from them. Many facts strongly point to such a conclusion and farther observations carefully conducted, will probably enable us to settle the question beyond a doubt.

A detailed account of the researches of the gentlemen alluded to, accompanied by numerous engravings representing the implements, ornaments and sculptures, &c., discovered in their excavations;—surveys of the various earth works, forts and enclosures in the Scioto valley, will be given in the second volume of the Transactions of the American Ethnological Society, now preparing for publication. They are still actively engaged in their labors, and intend, should the facilities be extended them to carry on their operations, to examine every ancient relic to be found in Ohio and the adjacent parts, where these remains exist.

Among the explorations which have been carried on in the United States, none possess a greater interest than those of Dr. M.W. Dickeson, in the south western states, chiefly in Mississippi, though in some instances extending to Alabama, Louisiana, and Texas. Dr. Dickeson has laid open or examined one hundred and fifty mounds and tumuli, of various dimensions and collected a vast number of interesting relics, which illustrate the customs and arts of the ancient people who built them. The mounds vary from three to ninety feet in height, and from twelve to three hundred feet in diameter at the base. The Seltzer Town mound contains a superficies of eight acres on its summit. On digging into it vast quantities of human skeletons were found, chiefly with their heads flattened, and measuring generally six feet in length. Numerous specimens of pottery, including finely finished vases filled with pigments, ashes, ornaments, and beads, were also found.

The north side of this mound is supported with a wall two feet thick, of sun dried bricks, filled with grass, rushes and leaves. In order to ascertain whether this immense tumulus was artificial or not, Dr. Benbrook, sank a shaft forty two feet, and found it artificial or made ground to that depth. Immense quantities of bones, both of men and animals, among the latter the head of a huge bear, were thrown out. Other excavations were made in this tumulus with the same result, thus showing it to have been a vast mausoleum or cemetery of the ancient race.

The mounds are generally in systems varying from seven to ten, which Dr. Dickeson has divided into six classes as follows: out post, ramparts or walls, telegraphs or look outs, temples, cemeteries, and tent mounds. The first is seldom more than thirty feet at the base by ten feet high. Their shape varies, presenting sometimes a pyramid, at others a cone, or rhomboid. Walls surround the second class, which are from ten to fifteen feet in heighth, the same across the top, and from forty to fifty feet at the base.

The "Look out" mounds are seldom under sixty feet high. Of this class, Dr. Dickeson has examined upwards of ninety. They are generally on the summit of a hill, overlooking the bottom lands. Here they stand some three hundred feet above the bottom lands, commanding an extensive prospect, and in some instances one may see the peaks of several systems of mounds in the distance.

The "Temple mounds" are seldom more than twenty feet high, and stratified with ashes, loam, gravel, &c. They all have an earthen floor. Dr. Dickeson has, but in a single instant, found a skeleton in these mounds, and in this, he thinks the subject a Choctaw Indian recently placed there. It lay in a horizontal position, differing from the usual mode of burial, which is the sitting posture.

The "Cemeteries" are oval, and from six to ten feet high, filled with bones, lying east and west, and when incased in sarcophagi, the rows run in the same direction. In some instances Dr. Dickeson found the bones lying in heaps, promiscuously. These he believes to have been the canaille.

The "Tent or Structure mounds" are small, and a short distance below their surface, fragments of brick and cement are found in great quantities; sometimes skeletons and pottery. Never more than six skeletons are found together, and more care is shown in the burial of these than in the "cemetery mounds." In one instance an angular tumulus was seen by the Doctor, with the corners quite perfect, formed of large bricks, bearing the impression of an extended hand.