. Carnegie Institution of Washington publication. m -O-- 120 771 FIQ. 34. ZJO 2 4 6 6 10 12 14 16 IS 2O 22 E4. Fia. 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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