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Scientific American, Vol. 94, No. 14 (April 1906) (1906)

leaf 7

An illustration from Scientific American, Vol. 94, No. 14 (April 1906), 1906, leaf 7
is made from feldspar When the composition for the body of the tooth interior of Africa and remote parts of the Orient. (usually called spar), silex, and kaolin. The enamel Once every dentist made his own supplies in his has been placed in the mold, the cover is shut down, and it is put aside in… … Making the Molds. also from hu- trim off the Final Inspection for Defects. man teeth. rough edges, None of- these were satisfactory. The ivory of the and shape them for the second baking. When taken matter. For the information of the exacting reader, elephant and hippopotamus tusk was not…

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