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1923]          Jones: Mound Excavations Near Stockton        115

                                REPORT BY THE AUTHOR

                  In certain mounds near Stockton two unique types of aboriginal
               manufactured products have been found, and, as these mounds have
               been dug into most unsystematically by amateur collectors, it seemed
               wise to endeavor to secure some of this peculiar material.  The
               unusual objects referred to were brought to my attention by Mr.
               James A. Barr, Superintendent of Schools of Stockton, who has per-
               sonally dug many of them from the mounds in the vicinity of that
               city. They are, first, rudely made baked clay balls, found in large
               numbers, generally plain but occasionally decorated, and rarely of
               fanciful shapes.  Second: certain chipped obsidians of rather un-
               usually fine workmanship and peculiar curved outline. In the Amer-
               ican Archaeologist for 1898, and the Land of Sunshine, 1899, are
               papers by H. C. Meredith, in which these "Stockton curve" obsidians
               are described and illustrated. Their genuineness is questioned by
               H. N. Rust in a letter to the American Archaeologist (1898). Certain
               masses of obsidian will produce curvilinear flakes when struck. In
               Barr's collection are several such specimens, unworked and partly
               worked, which were found by him in a mound from which a number
               of specimens of the finished object were obtained.
                  Barr has also found finished specimens in two other mounds in
               the vicinity, generally near the head of skeletons. The opinion that
               these curved obsidian objects were used by the Indians as "cere-
               monial bleeders," is advanced by Meredith, and has also been sug-
               gested to me, in discussion, by W J McGee. Experimental operations
               by me demonstrate their inadequacy for such a purpose. The super-
               ficial locations in which they have been found, in loose soil, and
               with skeletons in the upper strata, indicate comparatively recent
                                       MOUNDS 1, 2, 3
                  On July 27, 1900, I made camp near a mound about 200 yards
               south from the dry bed of Mormon slough, 9 miles east of Stockton.
                  This mound, no. 1, is some 300 feet long by 200 feet wide, and
               at the highest part near the center is between 4 and 5 feet above the
               level of the surrounding plain. It was carefully examined by run-
               ning trenches at right angles through the center and by sinking pot-
               holes at various places. So far as I could determine, the mound had
               not been disturbed save for some ploughing over the surface. Mounds
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