266: Chemical data on tuff, 1 mile east of Suskaralogh Point, St. George Island * Analyst, B. Bruun. This analysis can also be found in table 5. *

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267: Comparison of three samples of limbugite * The norms of samples B and C have been calculated to a water-free base. 14. Limburgite, 1 mile south of Garden Cove, St. George Island, Pribilof Islands, Analyses, B. Bruun. B. Limburgite, Nonopapa Landing, The Leeward Islands, Washington and Keyes (1926). C. Limburgite, Ryudo, Meisen district, Korea, Lacroix (1928). Analysis for sample 14 can also be found in table 7. *

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268: Analyses of rocks from the Pribilof Islands * All analyses by B. Bruun. 1. Peridotite, St. George Island. 2. Tuff, St. George Island 3. Core of aplite, St George Island. 4. Margin of aplite, St George Island. 5. Rhyolitic glass, St. Paul Island. *

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269: Analyses of lava flows of the Pribilof Islands * Analyses 6 and 8 by B. Bruun; 7, by Keyes (1930); 9-13 by rapid methods, S.M. Berthold *

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270: Analyses of dikes from the Pribilof Islands * Analyses 14 and 15 by Bruun, 16-19 by rapid methods, S.M. Berthold *

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