. Transactions. Brix. 143—300° C. —325 C. Fig. 14.—Etched with ammoxia axt) htdrogex peroxide. X 75. 446 A COMPARISON OF GRAIN-SIZE MEASUREMENTS. 5rix. —400 C. 450° 75, (/ = MM.

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries