Handstones
----------------------------------+---------------------------------
Igneous | Sandstone
-----------------+----------------+-------------------+-------------
Biface | Uniface | Biface | Uniface
-----------------+----------------+------------+------+-------------
Four | Four | Four |
Plane | Plane | Plane |
-----------------+----------------+-------------------+-------------
Pecked Pecked| Pecked | Pecked Pecked | Pecked
-----------------+----------------+-------------------+-------------
28
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32
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36
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1 1 1 40
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2 44
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48
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6 1 3 52
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2 2 56
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1 2 2 1 1 2 60
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1 1 64
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1 1 4 68
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1 1 1 72
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1 1 2 76
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1 80
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1 84
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2 2 88
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1 2 92
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1 96
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1 100
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104
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108
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1 112
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[Illustration]
[Illustration: FIGURE 43—Large milling stones. Above, granite. Below,
sandstone.]
[Illustration: FIGURE 44—Flat granite milling stone.]
[Illustration: FIGURE 45—Sandstone milling slabs, ½ actual size. Above,
flat without depression. 1 inch thick. Below, with depression.]
[Illustration: FIGURE 46—Handstones. A-B, four-plane. ½ actual size.]