Transactions . Fig. 24.—Section showing Positions of Slices and Air holings -,^~-- Scale, about 65j Feet (20 Metres) to IJnch. Figs. 20 to 23.—Sections showing , 20. Fig. 21. Scale, about 131 Feet (40 Metres) to 1 „l.^- ....^^.™,,,,..-^-:., _ Scale, about 33 Feet 110 Metres) to 1 Incn. Iiimsacacns. 1908-J3C&

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Keywords: ., bookcentury1800, booksubjectmechan, booksubjectmineralindustries