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.