Jones, Jr., in the _Smithsonian Report_ for 1877 has shown this to be a mistake. Mr. Jones describes an eagle-shaped stone mound north of Eatonton, in Putnam Co., Georgia, of the following dimensions: Height of tumulus at the breast of the bird, seven or eight feet; length from the top of the head to the extremity of the tail, 102 feet; distance from tip to tip of the wings, 120 feet; greatest expanse of tail, 38 feet. A careful regard to the proportions of the bird are shown. A similar stone mound, of nearly the same proportions, was found near Lawrence Ferry on the Oconee River in Putnam County. In this instance a circle of stones encloses the effigy. At Trenton, Wisconsin, and in many other places examined by Dr. Lapham, cruciform works were found, some of which were constructed with the arms extending toward the cardinal points.[21] Instances of extinct or unknown animal forms occur occasionally: one instance is that of an animal somewhat resembling a monkey, having a body of about 160 feet in length, while the tail describes a semicircle and measures alone 320 feet.[22] The most remarkable instance of the kind, however, is that of the big elephant mound found a few miles below the mouth of the Wisconsin River, so perfect in its proportions and complete in its representations of an elephant that its builders must have been well acquainted with all the physical characteristics of the animal which they delineated.[23] This fact suggests the inquiry whether these people were Asiatic in origin and penetrated to the interior of the country before their recollections of the elephant were forgotten, or whether they were contemporaneous with the mastodon of North America? In the remarkable works at Aztlan, Dr. Lapham finds not only resemblances to the Ohio antiquities, but striking analogies with those of Mexico.[24] [Illustration: Elephant Mound, Wisconsin.] Across the Mississippi in Minnesota and Iowa, the predominant type of circular tumuli prevail, extending throughout the latter State to the Missouri. There are evidences that the Upper Missouri region was connected with that of the Upper Mississippi by settlements occupying the intervening country. Mounds are found even in the valley of the Red River of the North.[25]