. Carnegie Institution of Washington publication. 72 m 173 73c 176 g 173 a sv pr pr 173/) °- 71 70 •,^ sr. pr SV u 0 os ph m c ss og d pr sv exp og exv 177 exv sg exp exi exp. 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, bookyear1910