. Carnegie Institution of Washington publication. CLARK â SS fttâ' â¬^ ./^4^Xft^ J ViUy: J-^^ ^r <y< 4 H 1^. fT\ ^j'-X 'â. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington

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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1910, bookyear1914