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FORAI OF CHILL TESTS FCR THE A, F.  4C                 if 4-3
3   o
FIG. 147,  FRACTURE OF CHILL TEST PIECES IN SERIES  C,n ^ inch thick. A mixture of coke and charcoal pig iron, with about 40 per cent, of scrap, was used and melted in a cupola. The fluidity strips ran up nearly full. The chilled test pieces gave a chill of about 1-16 inch thick, as seen in Fig. 146, page 561. This cast was made under the supervision of Mr. Jos. McDonald.