. Carnegie Institution of Washington publication. Methyl- Violet, Tropaolin 00 Butter yellow Methyl orange, .02% 4Br—phenolsulfophthalein Methyl red, .04% p—nitrophenol, .5% Neutral red, .02% Phenolsulphonepthalein, .05% 6 PH 7 -15', a—napthol—phthalein Thymolsulfophthalein, .05%. .03% .03%. 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