. Transactions. Fig. 7. Fig. 8. Fig. 7.—High side of scratched eccentric shell. 1 min. 850° F. (454° C.)Fig. 8.—Low side of scratched eccentric shell. 1 min. 850° F. (454° C.). Fig. 9. Fig. 10. Fig. 9.—High side of scratched eccentric shell. 1 min. 900° F. (482° C.)Fig. 10.—Low side of scratched eccentric shell. 1 min. 900° F. (482° C.)

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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries