It was my intention to pursue this study somewhat further, and the illustrations presented in Plate LXVI were partially prepared for the purpose of instituting comparisons between these northern forms and others of the south, but the time at my disposal will not permit of it. Fig. 1 is an outline of a rattlesnake gorget, probably from Georgia, which is preserved in the Natural History Museum of New York. It is four inches in length by three and one-half in width. The same specimen is figured by Jones in Plate XXX of his "Antiquities of the Southern Indians." Fig. 2 represents a large specimen from Tennessee, which is now preserved in the National Collection. The design is placed upon the gorget somewhat differently from the other specimens, the mouth of the serpent being near the top and the neck below at the right. There is also a dotted belt at the right of the head which is not found in any of the specimens described. Figs. 3 and 4 represent drawings of serpents' heads found in the ancient city of Chimu, Peru.[149] Fig. 5 is copied from one of the codices of Goldsborough, and is a very spirited representation of a plumed and spotted rattlesnake. The tablet shown in Fig. 6 has already been described under "scalloped disks." The remarkable plumed and feathered serpent given in Fig. 7 is painted upon the rocks at Lake Nijapa, Nicaragua.[150] [Illustration: PL. LXVI--THE SERPENT. 1. Shell gorget, Georgia. 2. Shell gorget, Tennessee. 3, 4. Painting, Peru. 5. From an Aztec painting. 6. Stone disk, Carthage, Ala. 7. Painted on rock, Nicaragua.] THE HUMAN FACE. A very important group of shell ornaments represent, more or less distinctly, the human face. By a combination of engraving and sculpture a rude resemblance to the features is produced. The objects are generally made from a large pear-shaped section of the lower whorl of heavy marine univalves. The lower portion, which represents the neck and chin, is cut from the somewhat restricted part near the base of the shell, while the broad outline of the head reaches the first suture of the noded shoulder of the body whorl. The simplest form is represented by a specimen from a mound at Sevierville, Tenn. It is a plain, pear-shaped fragment, with evenly dressed margin and two perforations, which take the position of the eyes. A sketch of this is presented in Fig. 1, Plate LXIX. Similar specimens have been obtained from mounds in other States. A little further advance is made when the surface of the most convex part is ground away, with the exception of a low vertical ridge, which represents the nose. Further on a boss or node appears below the nose, which takes the place of the mouth, as seen in Fig. 2.