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Scientific American, Vol. 94, No. 10 (1906) (1906)

leaf 10

An illustration from Scientific American, Vol. 94, No. 10 (1906), 1906, leaf 10
how the Indians could keep a supply of water in vessels. How well the government has succeeded in stamp- have made them witheut metal tools. His curiosity snow or ice. ing out yellow fever, is proved by the statement of led to a careful study, not only of the arrowheads themselves, but also of the… … Among Mr. Kendal’s specimens was a small piece of There are two ways of approaching this problem; IMPROVED TIRE PROTECTOR. volcanic glass or obsidian. The piece was 4x %x1% either by doing away with the infected human being, inches long. He handed it to the boy, requesting him or by doing away with…

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