Annual report of the Board of Regents of the Smithsonian Institution . bits ofevidence bearing on the authenticity of parietal decorations. Inthe floor deposits are two Magdalenian horizons with a sterile layerbetween. Wall engravings were left by the first occupants. In thecourse of time, with the loosening of plaques of stalagmite, some ofthese engravings were removed. A small fragment of this sort bear-ing the tail and hip of a bison was found in the lower layer. Latera larger fragment with the rest of the bison was found in the steriledeposit that covers the lower archeological horizon (mi
Annual report of the Board of Regents of the Smithsonian Institution . bits ofevidence bearing on the authenticity of parietal decorations. Inthe floor deposits are two Magdalenian horizons with a sterile layerbetween. Wall engravings were left by the first occupants. In thecourse of time, with the loosening of plaques of stalagmite, some ofthese engravings were removed. A small fragment of this sort bear-ing the tail and hip of a bison was found in the lower layer. Latera larger fragment with the rest of the bison was found in the steriledeposit that covers the lower archeological horizon (middle Magda-lenian). The two pieces united are seen in figure 12. Other blocksof stalagmite were found to enclose engravings and when properlysplit disclosed their negative imprints. The feet of a horse that are ^The lie dYeu was a part of the mainland until near tlie close of theQuaternary. 560 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1909. missing from one Avail engraving were found in the upper Magda-lenian floor deposit, proving that the drawing in question was at. least as old as the deposit enclosing it, and may have dated from thefirst occupation of the cavern. Smithsonian Report, 1909.—MacCurdy. Plate 11.
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