Page:Popular Science Monthly Volume 43.djvu/685

 There the quarryman's work seems to have stopped, if it always went so far, and the hoard of blank blades ready to be finished or specialized by some local arrowhead maker into perforators, arrowheads, spears, or knives, as the case may be, is carried away. When for a time its owner is compelled to part company with it, he buries it in the ground for safe keeping or to render the material softer for future work, and there for a dozen reasons



it may remain for long years, to be discovered at last by a surprised plowman.

Such a cache of hitherto "inexplicable" leaf-shape implements, consisting of one hundred and sixteen yellowish argillite blades,