Note 2 — Chapter III · THE SUBSEQUENT COOLING OF THE IGNEOUS BODY.

Mr. T. Heunter, Manager of the Iron-works of James Murray, Esq., of Dalmellington, Ayrshire. Another authority (Mr. Snelus, of the West Cumberland Iron Company), writes as follows: “I had a hole dug on the ‘cinder-fall,’ and allowed the running slag to flow through it so as to form a tolerably large pool and yet keep fluid. Any crust that formed was skimmed off. A portion of the same slag was cooled, and the solid lump thrown into the pool. It floated just at the surface.” Mr. Snelus adds, by the way, that he tried “Bessemer-Pig” in the same way, and that the solid pig sunk in the molten for a minute and then rose and floated just at the surface, with about one-twentieth of its bulk above the level of the fluid.