My object in noticing the construction of so many mounds in a single group and the modes of burial in them, is to call attention to the differences in detail where there can be no doubt that they were built by one tribe and probably by one clan, as the size of the group indicates a comparatively limited population. In these nine mounds we notice the following differences: some are stratified, others not; in some the skeletons are placed horizontally on the ground, in others they are in a sitting posture, while in others they are dismembered and in confused heaps; in some there are altar-like[15] structures of stone which are wanting in others; in some the skeletons are covered with a hard clay or mortar coating which is wanting in most of them, and lastly, we see in one or two, evidences of the use of fire in the burial ceremonies, though not found in the others. In some respects these mounds remind us of some of the stratified tumuli of Wisconsin, especially those opened by Colonel Norris in Sheboygan County, to which they bear a strong resemblance. In the latter part of 1882 Colonel Norris examined a group of works in Allamakee County, Iowa, which presents some peculiarities worthy of notice in this connection. This group, which is represented in Plate I, consisting of enclosures, lines of small mounds, and excavations, is situated on the farm of Mr. H. P. Lane, about 7 miles above New Albin. It is on a bluff in one of the numerous bends of the Little Iowa River, the character of the locality indicating that it was selected as one easily defended. I shall at present only notice those particulars which seem to have some bearing on the character of the burial mounds and mode of interment. Although there are no effigy mounds in the group, the relative positions and forms of the tumuli, as shown in the figure, and other particulars to be noticed, leave no doubt in my mind that the works, in part, are to be attributed to the people who built the figure mounds of Wisconsin. But, as will be seen from the particulars mentioned, there is conclusive evidence that the locality has been occupied at different times by at least two distinct tribes or peoples, differing widely in habits and customs. [Illustration: PL. I. GROUP OF EARTHWORKS, ALLAMAKEE COUNTY, IOWA]