. Carnegie Institution of Washington publication. 280 * 60 S 8 65 42 5° 45' ; 50' ' 55° ' | 60' 3 ° 265° . g ' I'0' £ ; a «7S- 80- 85° ; 10 15 20 25 30 35 40 45 50 65 too 90 80 7O 60 60 40 o 20. ° °. 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, bookdecade1900, bookyear1902