. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. Ordvpzayy Scale. JE/' -^^zcTi. 0-r^^nxtr*y ?igno. Scale J^B iÂ£z'ayTieâ¬ers ^y^^9 Jjiiihaste. d^irtius(i:)i fraymen6t of iTuR -matnctt(ai, gua-rites(3/, an3 'S fuj of fe2sHic jioypTtyries; fraf^tnii from a gr-ra-n-iixc ji o-i-pTtyr'y Iji); ytia^Tze&iie. frayme-nh UJ; paTiicles of an amyfcidloi^ â ma.^ri'xlrj ; o-ri[yi-:ial2y c2e- j>ottieS riaizve. co/tptr-La) a^cZ ca^czie/g/y c7i2oTiit.(io/ as an alifra^xovi Please note that these

. The copper-bearing rocks of lake Superior / by Roland Duer Irving. Geology; Geology; Copper ores; Copper ores. Ordvpzayy Scale. JE/' -^^zcTi. 0-r^^nxtr*y ?igno. Scale J^B iÂ£z'ayTieâ¬ers ^y^^9 Jjiiihaste. d^irtius(i:)i fraymen6t of iTuR -matnctt(ai, gua-rites(3/, an3 'S fuj of fe2sHic jioypTtyries; fraf^tnii from a gr-ra-n-iixc ji o-i-pTtyr'y Iji); ytia^Tze&iie. frayme-nh UJ; paTiicles of an amyfcidloi^ â ma.^ri'xlrj ; o-ri[yi-:ial2y c2e- j>ottieS riaizve. co/tptr-La) a^cZ ca^czie/g/y c7i2oTiit.(io/ as an alifra^xovi 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 Irving, Roland Duer, 1847-1888. Washington, Govt. Print. Off.

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectgeology, bookyear1883

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