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[[underline]] Chapter XVIII. [[/underline]] 390.

that the teeth were regularly much worn down, in the case of the living almost to the gums, in that of the ancient dead nearly to the sockets---in both as the result of subsisting on a gritty diet, full of mineral impurities.
    Possibly some of the larger pebbles that we called "polishers" (see above) may have been used on these mealing-stones, to grind or rather to bruise and crush the grain (almost certainly millet, [[underline]] Panicum miliaceum [[/underline]]) that was prepared for consumption on them (pl. 59, fig. 1). [[superscript]] 344) [[/superscript]] None of the 
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[[superscript]] (344)[[/superscript]]  On millet in ancient China see also note 172, on page 179.
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elongated stone cylinders with knobbed ends, used as "mealers" and analogous to the [[underline]] manos [[/underline]] of the rural Mexicans and the Central American Indians, [[superscript]] (344-a) [[/superscript]]
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[[superscript]] (344-a) [[/superscript]]   I am indebted to Dr. Alfred M. Tozzer, of the Peabody Museum at Harvard University, for calling my attention to this similarity---a good example of parallel evolution; for in such a case considerations of space and time rule out any suggestion of "culture-borrowing".
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occurred at Wa Cha Hsieh, though they came into use in China later---perhaps, indeed, before the close of her Neolithic period.

[[underline]] Stone Celts. [[/underline]]
   The most characteristic stone implements found at Wa Cha Hsieh (as, for that matter, on Neolithic sites nearly everywhere) were ground and partly polished but unperforated celts (on these implements see also pp. 176 [[underline]] sq. [[/underline]] [[strikethrough]] . [[/strikethrough]]).  They occurred, as we have just said, both as axes and as adzes (pl. 61), the latter being here the commmoner of the two forms in the proportion of rather more than five to one.  They were of all sizes, some being quite diminutive while others, especially the axes, where weight was more desirable, were large and heavy.  One of the latter, for example (pl. 63, fig. 2) measures 18 [[underline]] cm. [[/underline]] from poll to cutting-edge, by 6.6 [[underline]] cm. [[/underline]] in width and 4.5 [[underline]] cm. [[/underline]] in thickness, and weighs just over 2 1lb., 10 oz.