. Carnegie Institution of Washington publication. A. 'iZCi -3501- a.\7-l3.* It '7-22'.£ ⢠!* ⢠O 22 e.^2-^^a-5epaIâ ⢠^oa.^i|-^°-Jâ¢Â».9^-J</â¢2i *-«J*.«V -xy. 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, bookdecade1920, bookyear1922