About 10 feet within the point where a vertical line from the front edge of the roof would meet the floor the skeleton of a very young infant was found above and in contact with two thick angular blocks of limestone weighing 300 to 400 pounds. These rested on the red clay and had fallen from the roof. The thickness of earth above the bones was about 3 feet.
Ten feet farther in, on the clay floor, under almost exactly 5 feet of undisturbed material, were five flat stones. Three were of sandstone, the largest about 25 pounds in weight, such as can be found in place only on top of the hill. They were carefully arranged for use as a fire bed; on and around them were potsherds, flint chips, animal and bird bones, and a bone awl. This was the greatest depth at which artificial objects were found; and their position shows them to be as ancient as anything discovered.
Fig. 5.—Fragment of glass bottle from Goat Bluff Cave.[ToList]
At 25 feet in an interesting find was made. Eighteen inches below the surface of the floor, in a mass of mingled charcoal, ashes, mussel shells, flint chips, and other aboriginal refuse, was a small piece of glass, apparently part of a bottle, shown in figure 5. Above it and extending for several feet on every side was an unbroken stratum of root dust from 2 to 4 inches thick. Above this, in turn were several thin, undisturbed layers of camp refuse, about 6 inches in all, and then 6 inches of the loose, incoherent surface earth. This discovery is susceptible of two interpretations. One is that between the date when Indians could procure articles from the whites and the date at which they abandoned this fireplace there was time for the accumulation of the given thickness of disintegrated material from the roof, the cave, or at least this part of it, not being used meanwhile for a habitation; then for the accumulation of several distinct layers of camp refuse; and finally for the depositing of the cave earth over it all. This hypothesis is unreasonable. While the rate of formation of either roof dust or stalagmite is extremely variable, so that it is not safe to predicate a definite antiquity for objects found beneath even a considerable thickness of either, at the same time the small area involved precludes the idea that a number of occupants sufficient to account for the volume of débris could have lived here unless we allow a much longer period than would necessarily elapse within the dates indicated. The other, quite plausible, interpretation is that the glass was dragged to the spot by a ground hog or other animal whose runway had become obliterated by settling of the loose material through which it was made.
The only purpose of elaborating this subject is to guard investigators against attaching too much importance to an article found under such or similar conditions, whether it be a "palaeolithic type," or an "object undoubtedly of European origin."
Thirty-five feet in, under three flat slabs whose upper surface was a little more than 3 feet below the floor, was an adult skeleton, on the back, knees flexed to the chest. The body had been laid in a cavity dug in the clay to a depth of 6 inches. The bones were well preserved and fresh looking, but light and fragile.
Forty feet in, 3½ feet down, was a flat stone under which were two skulls. One, shown in plate 6, was perfect, with a full set of sound teeth; from the other, seen in plate 7, the lower jaw was missing. No other bones were found except two cervical vertebræ, belonging to the smaller skull. Undisturbed stratified ashes and roof dust were 30 inches thick above the stone.
To this point the trench was not dug to a greater width than 15 feet; it was now gradually extended to a width of 40 feet to include most of the central portion.